Caught in the Library! (Jack Stalker and akiravadel)

Honestly she wasn't sure if it would turn see through. When she worked out in it she didn't sweat a lot since she had always been so active but she guessed they would find out. Blushing a little his flirting really got to her. Her little heart gave some nice little flutters from his words, "oh stop Chris... I'm your sister..." Even with saying that though she really couldn't say much because they had been doing it for a couple days. Instead of this being a fling it seemed he really did like her like that with the whole flirting with her.

"I'm not sure..." the idea of him having a woman around to tease her when he wasn't there made her tremble. She felt like she was living in one of those stories where the woman was trapped in a sexual word of pleasure and master slave stuff. Gasping softly at the touches on her breasts she watched him with hungry eyes, "Mnnn...." That pleasure in her chest just went straight through her between her legs. Fuck his hands felt so good on her skin. Gasping when she was shoved against the door in her own home this time, it just made this moment all the more naughty.

"Ahhhhhh!" all that teasing from the morning made her sex really sensitive to him. "Oh fuck Chris....! Ahhhhh! Mnnnn....! T-They would hear.... they would see your truck... we can't... let them know!" The fingers that came down to slip into her ass made he feel so oddly desperate for it. Moaning against his lips she was a mess in just a moment for him. All the sex from the last couple days and now teasing all morning had her wet and needy in ways she'd never felt before. Moaning from the kisses along her neck and shoulder they sent wonderful shivers through her body.

"B-Be careful to not m-make a mess...." Kate trembled and pulled his cock out to start stroking in her well oiled fingers. The slick oil all over felt really nice against her skin. She stroked both hands over him and slid one down to massage his sack. While the other hand worked over his length stroking his large member, "ahhhh Chris... I-I don't know h-how we'll work out without getting caught... fuckk... I-I'm so close... please let me cum Chris.... i-it's been all morning... I've been aching since I woke up.... I-I'm c-close!" She really was close and the way he was moving she was having a really hard time holding back and about to tip over the edge thinking about all the sexy things they would do at the gym.
 
"Yeah, my sister, not anyone else's." Chris replied to her response to the flirting. Except that it was far from flirting as far as he was concerned. He intended to make good on anything that he said, anything that allowed him to sink into his sisters flesh and incestuously fuck her brains out. She was so hot and, since he had descended into his incestuous relationship with her, all he could think about was fucking, being inside her, being close to the woman who had invaded his every waking thought. She had driven him to commit unholy acts with her in the name of ecstasy and pleasure, and he loved every second of it.

"You're not sure? I could go either way. Understand, having some whore around would mainly be for your pleasure, it's not like I'd be fucking her myself." he grinned. "I only want to be with you Sis. You drive me fucking wild, I can't focus on anything else lately. All I've been thinking about for days now is you. How we've bonded and joined together and how we are going to continue with this, regardless of what anyone else might think or say. Until they have fucked their own sister they couldn't possibly understand." he told her, his fingers sinking into her holes over and over again as he manhandled her with her cunt and ass, sucking, pumping, drilling her open as his lips tasted the oils on her flesh. His cock trembling and throbbing painfully as it swelled to a huge bulging hard rod.

"Would they really recognise it as being my truck? Even if they did hear, even if they suspected, they would never say anything. Who would believe then, who would believe that a Honorable ex military man and his respectable librarian sister, married no less, would be a couple of incestuous bastard? Who would believe that you would cheat on your husband, commit incest just to get off? Just because you discovered that fucking your brother was the most pleasure you could ever have in life?" he grinned, pushing into her faster and harder now, really fucking her with both hands as he sucked on her throat. "They'd never believe that you would let you brother come in here, fuck you in your own home, make you moan like a whore. And you want to know the real truth?" he paused, stroking his thumb lightly against her clit while stretching and rolling his fingers in her ass. "They'd likely just start jerking off, thinking about what they'd like to do to you... or a member of their own family." he hissed, teasing her with his invasive digits.

"I'll mess up whatever I want Sis. starting with you." he growled as she started to stroke him off. His cock searing hot against her fingers and palm as it swelled even further in her grip, pushing her fingers apart as it slid through her grasp. He hissed as her fingers grasped at his balls, his body tightening and tensing. "Get caught? At the gym? Why, what do you imagine we'll be doing there Sis? I thought we were just going to work out there... but I guess you think I'm going to be doing something sexual to you? What might that be Sis?" he gasped, fucking his oiled up shaft through her fingers like they were a second cunt. "Do you think I'm going to make you work until you drop, exercise until you are bathed in sweat? Push you until you are broken and exhausted, then take advantage of you any way I want? Like when I fucked you after you practically passed out yesterday?" he asked teasingly through gritted teeth.

He could sense her getting closer, so pulled his finger free, sliding back to pull his cock from her grasp at the same time. "Close is how I want you Sis, bubbling on the edged, eager, hungry, desperate to fuck, Desperate to be fucked by your brother, like the twisted little slut that you are." he hissed in her ear. I'd like to take you outside, fuck you in the back of my pick up, let all the neighbours see what you get up to when your husband is away. Not yet though." he smiled, she'd oiled up a lot of his shirt, but it didn't really show on his combats. He pulled off the shirt, discarding it, wearing a T-shirt beneath it. "Better get dressed, you need to get back to work. You've still got the afternoon to get through, right? Unless you want to call in with an excuse for not coming back..." he suggested as he sucked on his fingers, cleaning them off one by one, before cramming his cock back into his combats. "If you do though, I'd want you to tell your colleague that it's because you are fucking someone." he gave a twisted grin. "Otherwise you better get dressed, spend the rest of the afternoon sending me hot selfies, on the hour, every hour." he finished, moving her away from the door and nodding towards the inside. "Keep those gifts I gave you on. They don't come off now, unless I say."
 
"I-I don't really want anyone else," Kate admitted, she would do it for him but... his attention on her mad her happy and that was a strange feeling. She didn't want to share him with anyone else and the idea really upset her. Actually she was glad he only wanted her, she wanted to keep it that way. It was oddly nice this moment even though he was ravishing her at her front door.

His cock felt so overwhelmingly hot in her fingers making her ache for him. She wanted him to bend her over and take her right there. Fuck she didn't care about going back to work right now she wanted him to fuck her senseless like he did yesterday, "Ahhhhh.... yeah.... make me work out till I'm exhausted and covered in sweat...help me get into yoga positions that leave me vulnerable to you fucking me..." Her body rocked down against his fingers and stroked him harder. She wanted him so badly it was driving her crazy!

"Tears a hole in my leggings and push inside me as I sit on your lap and you help me lift weights... Mnnn...." yeah she was really turned on and loosing her mind. "No!" Kate shuddered against the door when he pulled back and reached for him but he was stepping away. She was so desperate she could feel her mouth watering. Even she didn't get the satisfaction of getting him off, this was sooo much worse. Fuck she couldn't tell them why she would stay home, he was forcing her to go to work like that.

Hurrying back to change into her dress again she wiped off some of the oil but her skin was still slick just not as wet as before. Her bra barely hid her erect nipples and her sex already drenched her new pair of panties. Shaking when she got back to him she looked up at him tying her hair up into a loose pony tail leaving several strands of hair hanging down around her face. Pushing those glasses up she was hot, raging hot. Biting her bottom lip for a moment she wanted to ask this but she also worried it made her sound too much like a whore with asking if the butt plug was going back in her. Her body got used to the feeling and now she felt empty without it in. Or maybe another toy... It was going to be a fast ride back to the library. Going to the fridge she grabbed a smoothie she made the day before because she was hungry now. Then she couldn't handle it anymore she had to ask, "no toy or I don't know... aphrodisiac gel or anything?" Maybe she wanted it a lot more than she let on. After all she had those in her own purse right now. She pulled out the container with the gel in it, "I could... use it on you too for some fun."
 
Chris shrugged. Watching some whore eat out his sister while he fucked her mouth, or forcing her to come on Kate's face while he drilled open his sister from behind was only a mild draw, and since she wasn't into it, then neither was he. Instead he refocused his efforts on the here and now and what he was going to do to her later than evening. She deserved his full attention after so much time apart, after all there was a finite amount of time before her husband came back and by then she would need to be completely obsessed with him, completely devoted to her brother to the point where her marriage was left in irreparable tatters. He listened to her comments about the gym, giving a wry smile. "You can be so fucking dirty, can't you Kate. What would people think if they knew that the innocent and decent looking librarian at their library was such a filthy little whore at heart?" he smirked. "You've been living a lie Sis, and you should be thanking me any way that you can for helping you free yourself and embrace incest for what it is." he told her, "The perfect union of two people made for each other."

He listened to her Gym comments, then watched her return with hungry eyes. He eyed her ponytail with interest, a wicked gleam in his eyes as they trailed down her dress, feasting on her bare legs until they slipped into her heels, then roaming back up her again. He noted her nipples, straining against the fabric, and his cock grew harder and harder, it was going to be an uncomfortable afternoon for sure. "I didn't realise how hot you looked with a ponytail." he commented. "I'll have to get you to try out pigtails as well." another grin. At that point she vanished into the kitchen, returning to comment on the plug which he had forgotten momentarily. "We need to put that back." he told her, turning her around and bending her over against the door he lifted up her dress. He admired her ass for a few moments, before taking hold of her panties and tearing them off her with a loud resonating SNAP! "No panties this afternoon Kate."

With that barrier gone he spat on the plug and sank it back into her ass, sliding it across a sheen of saliva and oil to sink into her rectum. "God, I wish that was my cock right now... but that's for later Kate." he growled at her in satisfaction. Cock throbbing as he fingered her slit one last time before pulling down her dress and pulling her into a standing position by her ponytail. "God, I want to fucking do you against the door right now, so bad, so hard, until your screams bring the fucking neighbours over. I could do that you know Sis, make you scream, tell you that the only way you get to come is if someone knocks on the door to ask if you are okay." he teased. "But we have to leave now Sis. No fucking for you. Maybe we'll try that later, give you something to explain to your husband... before you are done with him." he finished.

"As for the Gel... maybe save that to help me get deep inside your ass, when I take your anal virginity properly?" he suggested. "I wonder what else you have in there?" he nodded at her purse as he guided her to his Pick up. "Heels up on the dash." he commented, opening the glove compartment. He pulled out some tape and a vibe, which he proceeded to tape to her pussy, pushing the toy up against her clit as he reached between her legs. He took the opportunity to run a finger through her slit, feeling the hot wetness which lingered there. When you feel it vibrate I want a sexy selfie, understand Sis? I want you to keep me hard until you get off work." he told her as they pulled up at the library. "And put your hair in pigtails for the last one." he added as he helped her out and shut the door, walking back to the drivers side. "See you soon."

...It buzzed every hour until closing time...
 
"Not living a lie, just not sharing what goes on in the bedroom... or in your case... anywhere," Kate blushed a bit after saying that. It was true though. She didn't go bragging about all the sex they got up to or tell anyone she knew about her dirty thoughts. Those were left for herself alone masturbating in the shower or the few times her and her husband had sex.

Grunting as she was turned around she held her smoothie out and gasped as her panties were snapped fro her waist, "I-I could have just removed them-HN!!!!" Her body arched as the plug slipped inside her. Legs shaking she took the toy a lot easier that time. She was getting used to it being there and dealing with it shifting inside her. Actually kind of liked it since it claimed her as his. Now with the jewelry she really felt claimed. It was almost like wearing a fancy collar to show who she belonged to. "Mnn!" She closed an eye as he pulled her by her ponytail. Fuck she wanted him to fuck her right now but she couldn't get caught like that, not yet... Not till she was sure about throwing her life away.

"I have... a couple vibrators... a small dildo and a change of clothes," Kate looked down in he bag as she listed off what she had. Kate put her legs up and felt him tape it into place. A part of her was so excited for this and she wondered how long it would vibrate for, "Mnnn....." For the rest of the day she was in a haze. The first hour it buzzed she jumped in her seat and pushed her hand between her legs, it was enough to catch her attention and get her wanting more before it turned off again. Damn him! Going behind some shelves she lowered her dress top enough to get to her nipple to pinch it. She took a picture of that and sent it with the caption, ~Tease!~. They just got more dirty the longer the day went. She found herself reading porn on her phone and completely distracted. By the third picture she went into the bathroom and sent him an image of her breasts out. She pulled it up and leaned down sucking on her own nipple trying to entice him, ~Please leave it on...~. She sent a second picture with it under her dress to her drenched swollen pussy.

For the last picture she put her hair into pigtails and had to set up the timer. She lowered her dress top and bent over pulling her dress up exposing her drenched slit, taped on vib and toy up her ass. She sent that picture with the caption ~Dying to cum... please brother~ Maybe it was her sex drive being awakened but this made her feel so desperate she wanted to disobey him and plunge her hand down below her dress and just cum already! She wanted him under her dress eating her out while she was working or maybe in the aisle waiting to fuck her around a corner. Something!
 
Chris got harder and harder as the afternoon passed by, with him sat in his pick up truck around the corner from the library. In range of the remote strapped to his sisters flesh, waiting to see the encouraging effect it would have on pushing her to send him obscene pictures of herself. Each time he sent the signal to activate her vibrator he would wait eagerly for her response, the pictures slowly getting hotter and hotter as she exposed and abused herself for her brother. He leered over the shots, knowing that only a short distance away his sister was risking discovery, behaving like a whore in heat because of his signals and instructions. She truly had descended into a pit of sinful and carnal depravity along with her brother and it made him proud to be her sibling, to have so readily embrace his incestuous madness. Embrace it to a degree where it would be impossible to casually tell who was the most eager for their next wicked and immoral coupling.

Seeing her suck on her own nipples made him almost furious with the need to see her, deliberately tormenting her with bursts to her vibrator, then depriving her of further activity, making her wait for the hour as he'd told her, wait long agonising minutes before she would feel the tell tale buzz and know it was time to debase herself once more for his pleasure. He never got tired of looking at pictures of her, he even rolled back through his phone to take a look at him fucking her on her desk. The shots laying there with her hands cuffed in the small of her back, the silver plug violating her perfect asshole... hell, he should stick them online, tease people with them. He wondered how many would jerk off without ever knowing that they were jerking to incest, jerking to the sinful coupling of a brother and his sister! It made him harder... maybe he should have some fall into her husbands hands, would he even believe it was his wife, behaving like a slut?

The pigtail shot was just too much. He flicked the vibe on, and left it there, a constant pressure against her clit hood, as he hopped out of the pick up and casually strolled towards the library. He had changed after the oil incident, wearing a camo patterned t-shirt now to go with a pair of black tactical combats and boots. He waltzed into the library after five minutes, easing the vibe down a few notches and leaving it on a random pulse pattern. The place was almost deserted, it was closing time after all. He spied his Sister, behind her desk and working with a colleague. He sent a few more erratic and random signals, toying with her through the connection he had to her with the toy. He watched her, gauging when to hold off and when to hammer her clit with vibrations, finally showing mercy and halting his assault. Eventually he approached her, with a nod to the colleague she was working with.

"Hi Sis, you asked me to pick you up at closing time, remember?" he told her with a grin. "I just need to find that volume you spoke about." he looked around, then pointed up at a section on the first floor, overlooking the rows of seats and booking out desk below. "You can lock up right Sis, it won't take long anyway, right?" he commented, slowly increasing the intensity of the vibe as he did so. "That okay with you?" he asked the other girl, turning without really waiting for an answer. He walked over to a spiral staircase leading to the section he'd pointed at. "We'll pick up your stuff on the way out, I know you wanted me to drop you at the gym afterwards." he added, climbing the steps. At the top he paused once out of sight, sending her a text. 'when you get up here, drop your dress, step out of it, then lean forward against one of the shelves... better be quiet as well...'
 
Kate was hoping he would snap and take her, maybe not in the place, she didn't want to loose her job but fuck she was dying in need. Watching her phone she waited for the answer but the answer was the vib remaining on. Gasping her hand came between her legs pushing it against her clit. After a minute she heard someone come in and had to quickly leave and put her hair back into a pony tail. Making her way back to her desk had been a chore. She felt it vibrating against her with every step driving her higher and higher. Then it started to lower.

Damn! The random pulse teased the hell out of her. She was dying for him now but couldn't say or do anything while she was working. Clutching her legs together there were subtle ways in which she'd lean forward when she was close and it would back off. When she'd relax back she felt it click up high nearly sending her over before stopping again. Holy fuck she was dying! Just as she was about to shove her hand under her desk and finger herself he walked up to the table. Fuck me here, she wanted to say not caring who saw but she caught herself, "y-yeah. It's no problem I can lock up Amy."

Amy was the girl she thought was pretty that worked there. Long red hair and freckles. She found her brother really cute and blushed a little, "yeah... he's so cute Kate is he single?" Kate looked back towards her brother as he made his way up the stairs then looked back to Amy. "No he's with someone. I'll help finish up here. You can head out." Kate smiled to her and after a moment headed up the stairs knowing Amy was finishing up grabbing her things downstairs. She would be gone in a moment and that was good.

Getting up there she stepped behind a shelf of books and dropped her dress her body shaking. turning around she placed her hands against one of the book stands. A little bit of her essence dripped from her sex and down her thigh. She was trembling she wanted him so bad but judging from him wanting to work out with her she wouldn't be allowed to cum yet. Maybe if she was lucky but then she'd loose the high she had all day.
 
As soon as she stepped into view and dropped her dress, Chris hauled out his cock. Unashamed and brazen as the long fat shaft and slick looking helm popped into view, his fist grasping hard at it as it jutted out from his combats. It was clear how hard he was, as he raped her body with his eyes, drinking in the sight of her drenched quim as his gaze roamed about her as erratically as the vibe had pulsed against the hood of her clit. A long clear rope of pre cum stretched down from his helm to snap and splatter on the carpet under his feet as he eyed his sister up and down. He never got tired of that incredible body she had, never, hissing softly as she came closer. As soon as she turned around he walked over to her. From where he was he could see over the railing to the floor below, catching sight of Kate's work colleague packing up and preparing to leave. That was good enough for him. "Hey... Amy wasn't it? Could you please hold on a moment? Kate needs to ask you something, I think. She's just checking something for me." he called down, then stepped back, sliding his hands onto his sisters waist and pulling her back and onto his cock.

A moment later his cock head pushed against her slit. It quickly became an unrelenting pressure, which grew in power and intensity until it finally overcame what little resistance there was and slid into her cunt. His enormous erection drove through the trough of her vagina, as it pierced deep inside her in a single thrust. Then he began to shaft her, pushing in and out with powerful, but slow thrusts, keeping things as silent as he could, holding back from ploughing all the way into her so as to avoid a slapping sound. A faint sucking and squelching bled free from his efforts, but blended with the buzzing from the vibe as he flicked it onto a low setting. The sensation was incredible as his cock fed on the raw heat and dripping juices which flooded over it as each thrust delivered a stab of ecstasy to his senses. He hissed softly into her ear as he pumped his cock back and forth in shallow thrusts. "You dirty little bitch, you've deserved this all afternoon." he whispered, removing one hand to wrap about her ponytail, yanking back her head and dragging her back onto his cock in a rhythm to match his forward thrusts into her cunt. Each stroke was ow dangerously close to slapping her firm ass against his groin, as he screwed her against the book shelf.

"Ask her Sis, we don't want to hold Amy up down there... she's about to head off." he called out, loud enough for the girl downstairs to hear him. He pulled out, stroking his cock against the insides of Kate's thighs, before grabbing it and stroking the helm up and down her slit from behind. His fluids smeared about her already dripping snatch as he eased off a brief moment. What he was doing was sick, twisted, dangerous, but so fucking what? Amy would never believe that Kate's brother was actually up here fucking her, he was a respectable person and his sister was a librarian for fucks sake, a married woman! If anything people would just call this Amy girl crazy and ignore her. Still, he made sure that his actions were silent as he continued to fuck his sisters tight hole. Pausing only a moment he reached around her with the hand which wasn't brandishing her ponytail like some reins. His fingers slid onto the vibe, pushing it hard into her clit as he started to drill into her again. "Come on sis, ask you friend what you wanted to... we need to get to the gym. Times wasting." he said into her ear through clenched teeth.

Releasing her ponytail he shifted his grasp to her waist, pumping harder and faster into his sister from behind, until he suddenly cut off the vibe. Then, as soon as she opened her mouth to address Amy (or himself), he cut loose. Standing perfectly still, he shuddered silently and violently as he came hard into her cunt, flooding it with hot cum as he ejaculated into her core. Globs of thick cum spurted forth to defile her insides, spurting and spraying out in a cream that slapped against the inside of her thighs as he unloaded his balls into her sucking quim. Shaking and quivering he held still, filling her with hot liquid sin, before pulling slowly out of her to disgorge a few errant ropes down the back of her thighs. The sensations shook him through to his core as he bit his tongue and stayed quiet, finally cramming his cock away and straightening himself up....
 
Kate could feel him eyeing her and she just wanted him more! Spreading her legs a little further apart she hoped she would cum this time. Fuck he was so hard for her and she was soaking wet for him! Wait... He heard her call out to Amy and then slid up to her. Covering her mouth with her hand she had to hold her breath for a moment to keep from moaning. No he didn't!

Sliding inside her heat she held onto the shelf with her other hand glued to her mouth. There was no way she could talk normally with him doing that! Panting through her nose she tried to not make a peep while feeling the inside pleasure of him moving inside her. It felt so fucking good too. She was so tight around him from the idea of being caught it just heightened her arousal. So made her scared to cum because she was so vocal, "I need-" He voice was cut off for a moment but could almost sound like she was thinking about what she wanted to ask her. Her eyes rolled back a little she was so close, those deep slow thrusts rocking right against her cervix of her teased pussy. She was one clench away from going over the edge, but then he pulled out.

She wanted to punch something. Actually that was higher erotic him sliding between her legs from behind. She pushed her thighs together trying to encourage him to slip back inside. That was teasing her almost as much as the vib had. Her mouth opened again to ask her but that vib distracted her along with him sliding back inside her waiting core. Arching her body she rocked back to meet his thrusts. Fuck she was coming! Then the toy cut off making her gasp and felt him filling her, "asshole..." She grunted out getting angry with him that time. She was so horny it was driving her crazy.

"I just needed to... make sure you," Kate cleared her throat. "Sorry I swallowed wrong it took me a second to clear my throat." She tried to cover up. "I need to make sure you got the pickup order for the morning." She called out. Amy smiled from downstairs none the wiser of what happened, "don't hurt yourself girl. I got them they're on the desk. I'll see you in the morning." She chuckled softly and started to head out having no idea what just took place. Didn't even question it since it was her brother.

Kate trembled and slipped down to her knees her whole body shaking. His semen leaked out of her and down her thighs onto the floor. panting hard a couple books fell off the shelf next to her and whispered, "fucking hell Chris.... I was this close..." She held her hand up pushing her fingers together. "So close..." she trembled frustrated now.
 
Chris loved the way his sister Kate responded to his almost cruel levels of teasing and sexual torment. It made him hard to think of the power he had over her, fuelling the filthy and depravity that he had swelling in his thoughts for their future. Their incestuous relationship was only going to become deeper and more intense as time went on, and it thrilled him to see that she was going to embrace it as much as he was. Even now, mere moments after coming, he was still rock hard and his hungry cock dripped with the cocktail he had created inside her viciously tight snatch. "Fuck... you're tighter than a fucking virgin Sis... I'm so glad that your husband didn't have what it took to fuck you right." he whispered to her with a grin, ""It means you'll have to stay away from him soon anyway, he'll start to feel how wide you've been stretched, you'll never be able to let him inside you again." he had teased with an amused grunt into her ear.

He stroked a hand up and down the inside of her thigh, smearing some come across her flesh as he ran the ridge of his hand through the trench of her cunt a few times, before easing into around to squeeze at her ass, leaving a few faint nail tracks in her skin. "You are going to be so marked up from all this fucking, you;ll never be able to let him see you again Sis. Believe me, it's over, you just don't know it yet." he continued whispering to her, wicked sinful flashes in his eyes as he let a lone hand roam about her, gliding over the snake armband and up to the serpent which was wound around her neck, marking her as his. He tilted his head, hearing the girl downstairs leaving and the tell tale click of the door latch locking behind her. "Looks like your colleague was none the wiser, I guess it's for the best that you didn't have a noisy orgasm after all Sis. I came hard though, so thanks for that." he joked.

When she fell to her knees, Chris move din behind her. Taking hold of her hand as she raised it he forced it down to the book splattered carpet, shoving her onto all fours as his cock nudged up against her again. "Good." he hissed as his hard cock nudged against the plug wedged into her ass, then slid down to plough back into her cunt. "I want you close. I want you desperate for a fuck, ready to do whatever the fuck I tell you to, because only your brother can give you the release you need." he continued, forcing his cock back into her on a sheen of fuck juice and cum, using his seed to lube the way into the hot depths of her cunny. "I'm still hard though, so you are going to have to take some more.... it's for the best, we have a tough few sets to get through... I need to have some release before then." he carried on, his hips beginning to build a steady rhythm as he fucked her among the books she'd brought down from the shelving. "And you don't get to come Sis, not until I say. You have a good few tasks to perform if you want to be a good sister." he grunted, picking up the pace. He began to slap against her now, the sounds of fucking unmistakable as he drilled back and forth, sawing into her gash as though his life deepened on it. The pressure built and built, his cock relentlessly assaulting her viciously tight cunt without any sign of let of mercy.

"Tell me... tell me when you get close again." he growled, "Tell me when you're ready to come for your brother.. tell me when... ahhh fuck... yesssss...." he shook violently and sent another torrent of cum blasting into her cunt. Pulling out immediately he sent ropes of hot seed slashing up her spine, some catching in her hair as he unloaded a second time into her. Hard and fast, making sure he pulled out long before she could have been close enough to come. "Fuck... we better get going Sis." he said, standing and admiring his work. "My friend Bruce runs the place, so we'll have no issue staying as long as we like." he explained nonchalantly. "I can't wait to get you on a mat and see what you can do, see if you could make it as an army girl." he smirked, leaning in, "Of course you wouldn't last five seconds in the army, not looking like this. You'd be fucked to rags, but I think I told you that already. Don't worry though sis... you can be in your brothers personal army of two." he smiled, dragging her onto her feet. "You know the drill for the ride over there. It's a sisters duty to keep her brother hard at all times." he turned to head to the door and wait for her...
 
Kate trembled feeling his hand moving over her thigh and it made her shudder in pleasure. Glaring up at him when he mentioned having a nice orgasm she was frustrated now. The moment he pushed her down she gasped, "Chris?!" She felt him plunge back inside moaning in pleasure. Shuddering her body pushed back as much as it could to meet him. He was so fucking hard and so good.

Right now she just wanted to sit on his cock and never let it go. Just leave him in there for hours and use a vib on her clit and tease the hell out of him too like he did her. Never move just leave him buried inside her feeling her clench around his cock. These sex sessions were making her imagination run wild to the point she could barely function without thinking about his cock.

Shaking under him her pussy throbbed around him happy to have his hardness back inside her. It was really breaking her down and making her more needy for his cock at all times. It was conditioning her to really want it more than she realized she wanted it. Meeting his thrusts she wanted it so bad. A part of her knew he was going to pull out and leave her hanging and desperate again but another part was hoping maybe this time he would let her fall over that edge. Panting harshly she moaned with each thrust but just as she opened her mouth, "A-Almost-" She felt him fill her too soon for her. Her eyes rolled back for a moment feeling him fill her once again then pulled out coming on her body.

"Fuck..." Kate shook under him and slowly stood when he pulled back. Turning to him her cheek were heated and sex starved for her orgasm but she went along with what he wanted. Putting her dress back on she wiped herself off a little but if they were there late with his buddy she was sure they would get up to no good. For the ride over she was very eager to have him in her mouth. Already imagining taking his cock into her mouth sucking on him quickly and deeply wanting to taste him, taking out her frustration on him. Poor thing wanted him so bad and it was driving her crazy. She guessed he'd make her change in the car or when they got there but that was okay.
 
Chris casually and occasionally fingered his sister on the drive to the Gym, sometimes simply squeezing one of her tits, or taking her hand and using it to jerk at his cock as he slid in and out of lanes and stopped and started at lights. it was a relatively short drive and finally they arrived at the Gym. The place was a small affair, accessed through a door which led to a small reception area. A staircase led to the gym downstairs, which was also home to a sauna and spa set up. The basement containing the equipment and mats was quite spacious, with natural light coming through slit windows which lined one side of the long rectangular room. There was a variety of equipment down there, numerous spinners and running machines facing large TV's which, when busy, would have been showing a variety of encouraging sights. Opposite those were various weight machines, dumbbells, pulleys, several exercise balls and benches, together with a space set aside for mat work. Across the hall outside were the changing rooms, then further down the corridor there was access to the indoor pool and the sauna.

Right now it was pretty empty, with only a single man and woman making use of various areas. Of course Bruce was there as well. The man was well built and wearing dark blue sports gear, easily as buff as Chris was, sporting glasses and a beard. Chris introduced them at the reception, all smiles and handshakes as he nodded towards his Sister. "Hey, sorry if I'm late Bruce, this is my sister Kate that I told you about. I had to pick her up at the library. Her husbands out of town so I'm running transport for her." he explained. Bruce replied with a thick Australian accent. "No worries mate." he said, eyeing Kate up in a way which showed no shame, "Just lock up when you're done, that couple know to be out of here in the next half hour anyway. Good to see that you're moving ahead with things Chris." he quipped, grabbing a bag and tossing Chris some keys. "No more people are coming in now, so you should be sorted. Nice to meet you Kate, you've got a great brother there." he said as a parting comment.

Chris nodded and smiled, a guiding hand on Kate as he guided her towards the changing rooms. The rooms were split by sex, and held several lockers in each along with some small showers. Once there he split to go to his own changing room, taking along the bag he'd brought from the pick up. He got into a simple pair of light brown cargo pants, sneakers and a loose fitting black sleeveless vest which showed off his muscular arms. He then headed out, waving off the couple he had seen on the way in, leaving them the only people in the gym right at that moment. Satisfied he headed over to his sisters changing room to see if she was ready, bottle of water in hand and a towel over his shoulder.

Leaning against the door he spoke to her through it. "We have the place to ourselves now Sis. I think a warm up followed by some high knees and then push ups is good to start, then a few sets of sit ups, lunges, squats, reverse crunches..." he mused through the door. He grinned, pausing, before opening it up. "We need to get you in shape Sis, so that you can handle whatever gets throw at you." he said, "Naturally, if you can't do what you're asked, then you'll need to be penalised. We should certainly set up a reward and punishment system, you know? Give me some suggestions, or I'll have to come up with my own." he told her, without looking inside just yet.
 
Kate looked around the place carrying in her bag. She hoped they wouldn't notice how turned on her was and how hard her nipples were in her top. The fingering on the trip over was driving her mad. Finally inside she looked around at the different machines. It was a rather nice gym for how tiny it was. She wondered why she never knew about it before, probably because she just went to the gym a couple blocks from her house.

Seeing Bruce walk over it didn't take long for her to realize this man knew about their relationship. Her heart started pounding terribly in her chest. Oh fuck... that made it so much more real that someone knew about it. This guy didn't seem to be bothered by it at all. How many people had he told about this?! Fear was clear on her face for a moment but everyone else was so calm she tried to reign it in and calm herself down.

Moving back to the changing room she looked around to make sure no one was in there and changed into her white bottoms and white sports bra. Her nipples were showing through a little and the white pants were not hiding the fast she had the plug in her ass and no underwear, "I am in shape." She turned to him pulling her hair up into a loose bun with a couple strands hanging down. She looked over at him seeing he actually contained himself and didn't burst in. "I mean if you don't set crazy sets for me to reach than we'll be alright. Maybe just adding an extra set than what I normally do. The more I complete are the amount of orgasms you'll give me? At least one with your oddly talented tongue." She opened the door and slipped past him with a little smirk. "If I fail... then that's another orgasm I give you?" She was trying to go for mild, worried he'd pick something extreme.
 
Chris could tell that his sister Kate had figured out something, from the way Bruce had spoken to them. It made him grin and he wasted no more time confirming things. "Yeah.. I can see what you're thinking Sis. Bruce and I were in the same unit. A few of us got talking over some whiskey one night, seems like there are more people out there who are into the idea of fucking their sisters than you might have thought." he gave an unconcerned shrug. "Incest has been going on a long time Sis, there are people who figure that if you are in love with someone, if you want them and they want you, then why let being related be a barrier to that? Brothers and sisters shouldn't have to be kept apart because of some silly principles and ethics that society tries to force n people. Society is ignorant to the attraction that can develop between siblings... and they should be allowed to explore that, to fan the flames of it." he nodded to her. "Bruce has been fucking his twin sisters for months.. and he's not the only one either. There's going to be a get together soon, maybe you'd be interested in going to it?" he asked her as he waited outside her changing room.

He shook his head as she appeared, slipping past him. He slapped her ass at her suggestion, his hand feeling just how firm and taut her ass was, quivering only slightly from the impact. He followed her into the main gym area, walking over to the mats. "I'm not the one setting the task Sis, that would be the army. We need you to get army fit, you're being fucked by an ex soldier after all." he commented. He shook his head at her suggestions. "Wow, you really are a greedy little slut, aren't you? So many orgasms? I think if you manage to do everything I say, maybe I'll let you come. Maybe, if you're real good and professional." he told her with a stern look, unashamedly raping her from head to toe with his gaze. He reached out and squeezed her left breast, thumbing her nipple through her bra, his other hand easing down between her thighs to repeatedly stroke at her pussy until her cameltoe because quite visible. "It's all or nothing Sis. You complete your tasks, that's good. If you fail then... then we'll see what happens, won't we. It won't be a reward of an orgasm for me." he insisted, leaning in closer, "Because I'm going to fuck you and come, whenever I feel like it. That's the way it works Sis, you know that? You come when I say you can.. meanwhile I come whenever the hell I want to , because you are my sister and you like to do what your brother tells you to, don't you? That's why you are so fucking wet, so fucking horny, so fucking eager for my cock." he growled through a grin, stepping back.

He slapped his bag down on a nearby bench, then reached into it to pull out a few bottles of water and a clock, which he set down on the bench as well. The digital face displaying a countdown clock which he had preset to a few tasks. "Two minute warm up. Show me some stretching." he began. "Then we'll start with some push ups. drop and give me ten, thirty second time limit of course. Then a thirty second rest, then repeat until I tell you to stop." he explained. Here, I'll show you what I'm after." he told her, leading her into the mat he lowered her to the floor. His powerful hands slid along her body, feeling the tightness of her arms arms as he placed her hands on the mat, a shoulder width apart and in line with them. He pulled her feet back, parting them slightly, kneeling next to her. "You can switch to kneeling push ups after the first set, that will just add another to the number I'm going to set you." he told her with a casual grin. He slid his hand onto her ass, easing his fingers down to stroke over the slight bump of her plug and down against her slit. "Naturally I'll be stroking you when you're working out for this one. When I'm satisfied that you've soaked yourself through, we can stop." he finished.

Standing he returned to the clock and set it going, "Two minute warm up then push ups." he repeated, some music coming on.



"Begin." he looked at her, the bulge in his shorts plain to see as his eyes feasted on the sight of her, his perfect sister, about to be ruined for any other man, ever. "You're going to love this Sis. I know I am. Don't worry, I'll be merciful." he smiled, but behind the eyes there was no sign of mercy, only primal animalistic lust...
 
Kate was a bit shook that Bruce and his tin were together. Honestly she didn't think it was that common but when you live your whole life thinking it's a sin it's hard to see past the fact that it's something you shouldn't do. Maybe the get together would be nice and not feeling like this was a horrible thing she was enjoying. That was still in the back of her mind that this was sinful and wrong and she was going to hell for it.

Shaking under that gaze it made her sex ache. Moaning softly she held onto him as he molested her and spoke such sexy words to her. There was now a nice wet patch where her pants pushed up against her clit showing off her swollen pussy lips. She would have to go to her knees. She was a lady and didn't have the upper body strength like he did. So she started stretching. Bending over she reached for her toes pushing her palms to the floor. Shuddering she felt his fingers teasing over her the whole time. This kind of workout she could get used to.

Sitting down she stretched her legs out and reached for her ankle stretching down her leg. His hands distracting her the hole time. By the time she stretched the other way she had a nice wet patch on the white bottoms and her nipples were clearly poking out, "Chris... this is torture... but a good distraction..." Those two minutes felt like they went on forever. She was trembling by the time she finished them and moved into position to start her first set with her knees up. Going up and down she counted them as she went for the thirty seconds then immediately lowered her knees once she could rest. Panting her mind was high on desire too so it did help push her a little more.

Pushing her hips back against his hands she tried to entice him into doing more with her but then her thirty seconds were up and she began again with the push ups but on her knees this time, "Ahhh.. Chris...." Panting hard by the third set she was shaking terribly and her white pants were soaked. It almost look like she wet herself. She did have to pee though but his touches were distracting her from it. When she finished her third set she looked back at him and moaned softly, "Chris.... I have to pee... and being so wet down there is making it harder to hold it... can I go to the bathroom really fast?" Maybe touch herself in there to relieve some of the pressure. Although after holding it in for a while it would feel rather orgasmic to let all that pee out.
 
"Fuck, you know how to tease, don't you Kate? You are teasing me better than I've ever been teased before... like only a sister can tease her brother. A dirty, filthy, wicked, incestuous little sister who is creaming herself already, thinking about what's going to happen next." Chris hissed as Kate went through her warm up stretches. "I wonder how many views we'd get for this if I filmed it and put it online?" he smirked, "Maybe we'll have to try that sometime, see what sort of a reaction we get? Sibling workouts... except we won't be able to show it all, will we, not if we want to avoid being arrested?" he grinned. As she sat there, stretching, he stroked his fingers through the soaking material of her leggings, feeling the folds of her cunt splay apart under his attentions. "Fuck, you're on the way to fucking soaking through already... not wet enough for me though, not yet." he shook his head. "And your nipples, if I shoved you against glass they'd likely cut through it." he chuckled softly, while his cock stiffened and bulged within his own shorts.

Every time she rose up during her set of push ups he stroked a finger through the trough of her pussy, feeling the wet heat against his finger. The tip was slick as he pushed and forged the leggings around the prominent shape and outline of her quim, he couldn't see it fully from where it was, but he could feel the warm soaking leggings as they were deformed to clutch at her cunt lips like a hungry mouth. "That's it... keep going Kate, not bad." he encouraged her, "but you have along way to go yet. Give me another set, another ten. It's nothing, these are early days yet." he assured her. "fuck.. you feel so good... I'm proud of you Sis. Not for this.. but for giving in to your inner whore. To giving in to the fact that you were born for one thing, to bring pleasure to your brother, and to give in to his hunger. His hunger for your flesh." he teased her, his warm breath bathing her ear as she rose up into another stroking finger, his digit slicing through the crease of her cunt with ease before she fell lout of its reach. Over and over, ten strokes teasing at her perfect mound.

By the third set of push ups things seemed to be warming up. She was dripping and Chris was amused by her squirming writhing form, as she broke to speak about her discomfort. "You want to take a break? Now? But from the way you are moaning here I was thinking you were liking it." he replied as she mentioned a need to pee. "Breaking now would be bad Sis. it would be naughty of you to break the rhythm. Now continue. More. More push ups Sis." he grinned, swishing the paddle there was a loud SMACK as it caught her ass. "Let's pick up the pace as well for the last three sets. Twenty. Give me twenty." he told her, the SMACK of the paddle ready to greet her ass each time she brought it up and back, switching from buttock to buttock as he continued to stroke at her with his other hand. "You really are so fucking wet, aren't you Sis?" he continued. His voice merged with the SMACK of the paddle on occasions, as her perfect ass was reddened and tarnished beneath her leggings by his attentions with the rubber paddle.

"You can piss yourself when you're done. That's what you want to do, isn't it Kate? You are filthy, dirty, nasty girl aren't you Kate? A girl who wants to be so fucking nasty for her brother. You want to piss yourself right in front of me, don't you Kate? Make me watch while your leggings turn see through and stick to your legs and cunt and ass, because you just pissed yourself? Answer me!" he shook his head. "You get to piss when I tell you to Sis. No pain, no gain." he shifted around, showed her his face, his flaring eyes as he smoothed the paddle over her ass cheeks, SMACKing her every other push up. "I do want to see it Sis, Of course I want to see my dirty sister piss herself eventually, because she is such a nasty little slut. Is this another first for you Sis? Have you pissed yourself in front of your husband? Or is this another virgin act that you saved for your brother?" he teased her. Opening his shorts he dragged out his cock, moving so she could see it, kneeling next to her. He started stroking himself, fingers slick with pre cum after a couple of strokes down its long fat length. "You need to hold on Sis. Hold onto my cock with one hand, jerk me. If you make me cum... if you feel my spunk slapping your face then you can do what you want... but not until then, okay?" he told her. "Tell me how much you need to see me come... who knows, maybe I will?" he gave a cruel grin... he wasn't planning to let this end soon...
 
Kate was a mess doing this for him. Her pussy felt so hot and so needy and the adrenaline from working out was only making it worse. Wiggling against his fingers she actually was liking it. The pressure inside her was building and it felt rather good. Along with her desire being so high. She decided to blame it on the fact that she'd been turned on for hours and it was making her go crazy.

"Ah!" Kate jolted a little from the smack not expecting it. She almost leaked a little, "C-Chris?!" Moaning like a needy whore she kept moving up and down between the touches and the smacks. This just brought her to a whole new level that she wasn't prepared for. The more he talking about it the more her body shook, "Yes.... it makes me ache the thought of you controlling when I can pee too...ahhhh.... fuck..." Looking up at him her eyes were glazing over in lust. "I-I've never peed in front of my husband... I once wet myself on my bike... It was so hot I rubbed myself against the bike seat until I came... I don't know why it felt so good to hold it till I lost control."

Moaning she looked down at his cock almost drooling for it, "ah!" She arched when the paddle smacked down against her. She looked up at him and had to be honest, "I-I'm not desperate to pee yet... on a scale of 1 to 10 it's about a 6 or 7." She reached up to stroke his cock watching his precum drip down. "But... it does turn me on to see you cum. To have you so enamored with me you can't control shooting it out all over me. Ah fuckkk... I want to cum like that... Mnnn.... but I do have to pee..." The pressure was almost to the point she wanted to hold herself but she had to be honest she could go for a bit longer before she lost control.

Watching his hard cock in her hand she wanted to taste him, wanted to fuck him, oh god maybe she did have to pee more than she realized. The sharp smacks of the paddle made it hard to tell and the wetness between her legs made her feel a bit more desperate than it should.
 
Her moans and the way his sister Kate was moving were driving Chris wild, his cock was a rigid baton that was hard as steel. As he watched her squirm and writhe through her exercises, his cock head flushed and his slit wept pre cum until it was dangling from the head in clear crystal strings which slopped against the floor and exercise mat. He couldn't believe how hot and needy his sister was, but he relished every second of it, every second of looking at her and admiring her fit perfect body as she followed his instructions. Her husband had gone away? He would never go away, the man must have been insane and he was going to be the one to take advantage of that madness with his own. He listened intently as she spoke about her bike ride, eyes furious with hunger and desire as she gasped and moaned her way through it.

"That means you are a double virgin for your brother, I'm going to take your virginity three times. I took your incest virginity and I'm going to fuck your ass and make you piss yourself for my entertainment as well. Thank you Sis, you are such a good sister, I might actually let you come. God knows, I want to see you have another orgasm, they're so fucking hot. I love the way you look, the way you sound, the way your body quivers." he assured her as he tossed the paddle aside, wanting more contact. He slapped her rising and lowering ass with his hand now, his palm slowly beginning to leave his hand print in red on her ass beneath her leggings. He had been neglecting her tits, but right now her heaving ass was too much to ignore. His cock bobbed close to her face as he leaned over her and slivers of her warm breath could be felt against it, sending uncontrollable shudders through him. The feeling of her hand sliding up and down his cock, running from tip to balls through the sheen of fuck juice it was weeping from the head, made him growl with need. A craven desperate need to feel her flesh against his. He let her stroke him until she was halfway through the set, then pulled away, leaving strings of his pre ejaculate stretching and snapping between her fingers and his cock as he settled back out of reach.

He moved behind her, resting his hands on her ass as he shuffled up to her, feeling her ass push against his cock now when she lifted up from each push up. His massive cock slapping against her ass each time. "I want to see you piss yourself Kate, to be that much of a filthy little whore for your brother. To turn those leggings into a sopping wet mess, stuck to your thighs and cunt... I also want to see you come like a whore, but that's not going to happen. Not yet." he told her in a cruel teasing tone. "I know you want to watch me come sis, you liked it when you jerked me off in my truck, when you made your own fucking brother blow his load with your hand. That much power with just your hand." he grasped at her leggings, his powerful fingers dug and rent the material, tearing it open at her crotch. Her silver plug was immediately revealed, along with her sopping wet cunt. He guided his cock to her slit and pushed, the wet heat allowing him to spear all the way into her until his balls were nestled against her flesh. Her cunt tight around every inch of his enormous shaft as he left it there, searing against her with its raw pulsating heat. Every throb was like a stroke against her clit from within as he slid his hands onto her midriff, feeling her abs against his fingertips.

"You want to come, while watching me shoot my load, that right Sis? Well, I think you maybe deserve that, after all I've already blown inside you, so slapping you with hot cum, that's something I'm fine with. I'll do it Sis.... you just have to do something for me first. Something you wouldn't do for your worthless husband." he leaned over her, pushing against her, holding her down with his body weight, preventing her from pushing back. He fucked a few strokes into her then, before moving his hands to pull her back up onto all fours, then he moved his hands to her thighs, pulling them apart a little more as he was nestled in her hot dripping cunt. He snatched a water bottle from the side, "Drink this." he told her. His cock railing into her now, clashing their bodies together with violent shaking thrusts. "Then tell me sis, tell me what a dirty, cheating, incest loving little slut you are. Tell me how much better I am than your husband. Tell me how you want me to mark you up every day so you'll never be able to strip off in front of him again.. and then Sis.. I want you to piss yourself, I want you to piss all over my cock." he growled. His hands slapped onto her hips, clawing at her flesh, leaving scratches on her skin as he began to pull her back into his hip driven heaving thrusts as he hammered stroke after stroke into her cunt...
 
Just him talking about her coming again and how she looked rocked her to her core. She wanted to cum so badly it was almost taking over her mind completely. The smacking on her ass stung so badly but she couldn't help but to lean into them. When he pulled away she almost whimpered in need but he slid in behind her and got her even more excited. Shuddering she rocked against his cock. It was true it was all true, "it's hot watching you drip in need for me... It makes my whole pussy ache." She gasped as he tore a whole into her leggings exposing herself to him.

"Ahhhhhhyessssss......" Kate moaned when he pushed himself back inside her. She was already very tired from working out and releasing all those endorphins and being so turned on it was a relief when he pushed inside her. Then not so much when his cock put pressure against her bladder. "Ahhhhh......oh fuck...." she reached down pushing her fingers against her pee hold for a moment and tightened up to keep from just letting it out. A little dribbled out of her. The pressure of him inside her increased her need to go almost double.

Shuddering over him there was so much pressure inside her now, it hurt but felt strangely good. Really good. The couple times she held it to the breaking point she nearly came when she seed it felt so nice. Maybe she really was a sadist. Just one more thing for him to control and as he spoke it was clear she liking it as he pussy practically throbbed around his cock. Moaning against the ground she couldn't move and her arms were weak after all the push ups and couldn't struggle or anything. The couple deep thrusts into her rocked against her bladder and her g-spot driving her mad making her cry out in pleasure.

Drink?! Kate shakily grabbed the water bottle and drank it... all. She felt so full. Crying out she dropped the bottle with her legs further apart it was so much harder to hold it back now, "C-Chirs! Ahhh! AH!" It felt so good yet so much torture. She wanted to leave into it and cum all over him but if she did then she would pee. Reaching down she pushed her fingers against herself trying to hold it in. "T-That's embarrassing Chris! Oh god I've never peed on anyone I-I've thought about it but MN!" She tensed as a little spurt came out but she was able to stop it her whole body shaking. Even with all her complaining her pussy was drenched more than before. Her clit was throbbing and her inside were trying to milk him for all her was worth. She was loving every second of this clamped onto his cock. This desperation and turned her on to a whole new height she couldn't stop shaking.
 
"Good. I want you aching for me, I want you aching every waking minute. I want you to have me in your thoughts, I want you thinking about us, I want you admitting to yourself that the only pleasure out there is the pleasure you can find on the end of your brothers cock." Chris replied as he tore open her leggings to start ploughing himself into her. Her moan as he bottomed out in her cunt sent a shiver of pleasure through him, encouraging him to pick up the pace for a few seconds. His merciless shafting of her needy cunt sending shudders through his entire frame as he took his sister right there on the floor of the gym. "Imagine how many people use this place Sis? Imagine how many people have no idea what goes on here after they've gone." he hissed as his cock burrowed into her tight hole. "Yesss... my cock is hard and ready for you Sis, you remember that."

"I don't fucking care about your embarrassment Sis... I gave you a fucking order!" growled Chris as she held back. He could still feel her wet cunt sloshing against his cock, clenching and convulsing along the length of his shaft as he drove it into her, but the torrent he was expecting was yet to arrive, despite his instructions and commands, despite the desperate demand she was delivering to her. "Don't give me all this resistance you little slut? Thought about it? You just fucking did it, juiced up my cock a little... now do as I fucking told you Sis.. Tell me what I want to hear and piss on my fucking cock like the filthy, dirty little whore that you are, the incestuous little slut who wants to pleasure her brother so he can fucking come." he growled, hissing, gasping, grunting as he grasped her hair with both hands.

Holding onto her hair like it was a single rein, Chris began to pound harder and harder into her from behind. His long shaft dripped with fuck juice and what piss had escaped her bladder as he slammed into her. The slapping of his balls against her flesh, his groin into her ass, his grunting and gasping, all of it created a cacophony of sin around them as he screwed into her deeper and deeper. "You never pissed yourself while being fucked, that's the whole point Sis. You can do whatever you want with me.. AHHHH! I'm your brother. You can do what you need to in order to come, you don't have to hold back, not when he's telling you to do something." he instructed her, pulling her head back the slapping sounds intensified as he drove in and out of her drenched cunny, the speed of his penetrating thrusts picking up with the sheen of slick carnal lube that was now soaking his rod.

Chris released a hand from the hair bound about his fist, allowing him to pull Kate's back into an arch as he hammered her quim with his cock. "Prove it to me Sis, prove to me that I'm better than the fuck that you married. Show me that you can do what your brother tells you to. Show me that you aren't just some whore that your husband uses, give in to the thoughts in your depraved little mind." he growled continuously, his words beating against her ears as he raked his nails down her back and slapped her ass, before sliding that hand down to begin teasing at the plug wedged in her ass. The gem capped bulbous toy shifted against her rim as he toyed with it. His fingers trailed over the swell of her buttocks to reach it, as his cock continued to be devoured by the depths of her hungry cunt. "This is what you've wanted Sis. Admit it to yourself."
 
Kate was so beyond turned on right now. Grunting as he grabbed her hair she was so close to pissing all over them another dribble came out. Panting harshly she didn't know what else to do to try to hold it it. It hurt so good along with his nails and the smacks against her ass. She was really turning into a masochist who enjoyed being fucked and dominated by him. Controlling her orgasms and her piss.

He was slamming into her so hard and so fast it was only a matter of time before she wet herself. All the water she drank was heavy in her stomach and as soon as she broke this seal it would be harder to hold it afterwards once that water joined the rest. Torture, but it was so good. Drool dripped down her chin as her moaned came from her got deeper and more desperate, "Ahhhh!!!!" She arched back as he held her hair. That arching slammed him against her g-spot and aching bladder.

She was a mess under him but it felt soo good to be that mess. Fuck he was hitting all the right spots and after being teased so much this was going to be a big mess. For a moment she just took it all in. This what what she'd been asking for. To be used and fucked till she was satisfied and here it was, "Ahhhh!" Meeting his thrust another hot spurt of pee came out and then she finally let herself relax and push back against him harder. "F-Fuck me Chris! Ahhhh! R-Right there! Oh fuck I'm-I'm going to pee, I can't hold it! Oh fuck this is the hottest thing I've ever done." Moaning the pressure built up and she reached down massaging her tense urethra for a moment and finally felt her body let go. "F-Fuck me brother! Fu-Fuck it! Make me wet myself! Oh fuck! H-Here it comes! Oh god!!!"

Arching her body further pee trickling out for a second until it just started spurting out of her with his thrusts, "Ahhhhh!!! FUCK! YES!!!! I-I'm Coming!!!" The force of holding it back and him slamming into her while peeing herself sent her over the edge squeezing his cock hard. Her hand moved down between her legs rubbing her clit and feeling her piss run down her fingers. She shuddered hard rubbing her pee all over her clit feeling it splashing over her legs and onto him. It was one of the hottest things she'd experienced so far with him.
 
Chris pounded into his sister like he had never fucked anyone in his life. His slick cock sawed back and forth in her cunt, penetrating right to her cervix now with each hip driven stroke into that sweet sopping gash between her thighs. His hand in her hair bound it about his fist and kept her bent backwards as he fucked into her. Sloppy squelching sounds which announced nothing but obscenity echoed in his ears as he drove into her, his free hand pushing against her plug, then slapping her ass, before sliding up her spine. There was no slowing down, no relenting, no mercy. His cock just kept pounding hard into her, only the erratic nature of the thrusts, as he grunted and groaned, offered any respite as he fucked her. The sensations bathing his cock of her hot juices flooding out of her only served to lube his cock further, until he was buried in her to the balls and his feverish thrusts were pushing him towards his own orgasm. He strained to hold back though, aided by his earlier ejaculations into and onto her at the library.

She was spurting like a whore, pissing fuck juice out of her cunt with each of his thrusts. He slapped her ass each time he felt hot girl juice wash across his shaft. "Piss you little bitch. Piss you nasty little fuck, piss and show your brother what a nasty filthy whore you can be with the right incentive." he growled. He could see her drooling, feel her wet cunt sucking on his rod as it burrowed into her. She was a world class whore, he could scarce understand how she had gone through this much of her life, so many years, without this wretched evil inside her becoming known. "I don't know how you managed this Sis. Being an incest whore at heart and also being so fucking nasty... ahhh... there's no going back from this Sis. I know what you need, what you want. You need to be fucked like a filthy whore... and only your brother is going to be able to satisfy that urge, scratch that itch, see to that craving." he grinned, His cock rammed into her with such friction he could almost hear the flood of juices sizzling against it as he fucked it through a torrent of liquid to plunge it into her now sodden and drenched cunny.

"Yes... fucking do it you little slut Kate. Fucking do it!" he commanded, his voice a shout as sh e touched herself and he felt the collapse of any resistance in her voice as she wailed out, giving in to the sin as she forced herself back against his railing shaft. He smirked, gripping her hips to hold her steady now as he hammer fucked her sweet cunt, waiting to feel the depravity pour out of her cunt as easily as it spilled from her lips. "That's it, do it you sick depraved little bitch." he gasped, his cock stiffening and bulging inside her, pulsing in time to the quivering of her tract as it engulfed him. The she was gone, her piss spurting out around his cock as she orgasmed and pissed at the same time. "You fucking whore, I didn't tell you to fucking come, just to, ahhh god!! You fucking.. gaaaggGGHH!" he shuddered from the feel of her warmth washing along his cock, spraying against his balls to drip off them as she writhed and squirted out in climatic ecstasy.

With her orgasm blasting against his cock he let himself go, coming hard into her cunt as he fucked his cock through the wall of fluids to bury itself in her cunt. He collapsed on top of her, forcing her flat as his body jolted and jerked violently as he orgasmed hard into his pissing mess of a sister. Thick cum was ejaculated deep into her snatch, her gash overflowing with it as his seed poured out of her to be washed down her legs by the liquid sin pouring forth. "You bitch... that was so fucking good... ahh fuck...!" he grunted, struggling to get the words out as he railed into her her, forcing her flat to the mat. She lay in her own juices as he held his cock inside her cunt, coming for what seemed like an eternity into her hole. His body was wracked with convulsions, his balls mashing into her as his swollen bulging pulsing cock blasted his own sin into her until he was finally spent, pulling out and standing up to admire the mess of her disaster area of a cunt. "Not... ahhh... not bad sis. but you didn't do what I told you to. That means I'm going to have to get you back. Don't worry, I'll think of something tomorrow." he grinned through a haze of blissful orgasm induced ecstasy. "You better clean up your mess."
 
Kate loved every second of this. Rocking her hips back to meet his she came all over his came and pissed all over both of them. Sinking to the floor with him she felt her orgasm still going as he twitched and rocked inside her. She almost had like a second orgasm as he sputtered and filled her again. Moaning softly she rested onto the floor not caring how dirty she was for the moment. It just felt good to feel him use her like that. She really was a brother loving whore and honestly he was fulfilling all her fantasies she ever hoped for.

A part of her almost wanted him to pee inside her. She was messed up. It took her a long time to be able to move again to clean up the mess she made. The whole time her legs were shaky as she was in a haze. With her workout pants ruined she would only be able to use them for sexy things. When she stood up they actually came together enough for it to not be noticeable. However she was leaking their cum down her thighs.

After cleaning the floor she looked to Chris, "I shouldn't have enjoyed that as much as I did. You came so much in me it's still leaking out. I used to hide this by playing with myself late at night and never told him about it. I just dealt with it and imagined these terrible things were happening to me. I'd have to bring a towel and toys into the room with me almost every night because of how we I would get. But now... I haven't been for a few days with you here." She looked down at her drenched thighs not able to see the hole from that angle but she could feel just how wet it was between her thighs. She would really need a shower before going too far she was covered in pee and cum, both of theirs. "Can I go shower?" Or was he planning more for her that night to work out in.

She was feeling a bit more clear headed now that she came but... not angry or trying to pull away from him like she did before. She actually stayed close to him wondering if he had a plan for what to do next, "Do you... want to shower with me?"
 
Chris found it hard to believe that his sister Kate was a depraved, fuck addicted little slut at heart, but the evidence was clear. She'd fucked him so many times now, almost all willingly, even pissed herself at his command. It was highly arousing, as well as amusing to some extent. Now, that he knew she was addicted to his cock, separating her from her husband would be a simple matter. He listened to her as she stood up, looking down to admire the sight of his cum leaking down her thighs. "But you do enjoy it Sis, don't you? You are the perfect little slut for me, for your brother. We're going to have such fun." he grinned, ropes of cum streaking her flesh as they stretched out and seeped from her cunt. Gobs of it splattered the floor and the place reeked of fucking. The cleaners would have their work cut out for them in the morning.

He moved to stand in front of her as she asked about showering. "You failed Sis, don't you remember? And I'm still hard. That means you still have some work ahead of you." he told her with a shake of his head. You've had your fun, but I still want to fuck, so you're going to have to take some more." he moved away from the wet patch on the floor, partially absorbed by the mats there, and sat down, back to the wall behind him. His cock was still jutting up from his groin, smeared with a cocktail of sinful secretions. "Come here and squat on it, I want to see you sliding up and down it." he told her. "And take off that bra, I want to see your tits." he added in an almost nonchalant tone as he looked at her. "You can keep the leggings on until we stop the training." he added with a grin, grasping is cock and giving it a few strokes as he looked at her, admiring the devastation which had been wrought on her by her own sick little actions.

"You think I'm going to just let you get away with 'coming' ahead of time? Is that what your excuse for a husband would do? No Sis, when I tell you to do something it's for your own good as well as mine. It's not going to stop here either, not now, not ever." he continued striking his cock as it rose up like a mast, his eyes fixed on her thighs and her slick cunt as he beckoned her over. "I want you sliding up and down, taking it right up inside you. Push down until it's right in there, up to the balls. Show me how much more you want me than your husband Sis. Twenty squats, then I want you to straddle me and jerk it until I come all over your stomach and tits." he decided finally. His arousal was evident as his cock raged upwards.

"Come on Sis, you can't be tired after just a few push ups, I want you to be the best little incestuous whore you can be, a nice little incest loving freak, just like your brother." he grinned, leering at her with just as much unashamed lust as the first time he had toyed with her at the library. "Or perhaps you need an incentive? Maybe I should call someone to come over here, maybe get Bruce to come back to pick up something I forgot to give him?" he teased, though his eyes began to flare with impatience. "Snap to it Sis."
 
Kate watched as he moved to the floor and leaned back, she would have to squat over him or get on her knees to take him. This position would be very embarrassing for sure. She bit her lip and made her way over to him and removed her sports bra. Dropping it onto the floor her nipples hardened in the cool gym air. She was sure it was cooler in there because of people exercising. However it did cause her nipples to harden.

Squatting over him she liked having the leggings still on her, it was really sexy. It took a little adjusting because it was a weird angle for her. Wrapping her arms around his neck she squatted down sliding him inside her, "Ahhhh.... i-it's so tight like this..." She took him all the way in and right down to his balls. "Mn! N-No you don't need to call anyone." She blushed but the thought of someone watching them that wouldn't judge them made her twitch. He he jack off on her too?

Then began the harrowing journey of twenty squats. Each time back up and down she shuddered her pussy clenched around him and fluttered around his cock. It felt so good like this. Almost like she could feel him moving through every inch of her pussy, "oh fuck...!" He felt so good inside her she was lost in it for a moment not even noticing the burn in her legs. She just felt her pleasure quickly rising, since she just came off of her orgasm before she was rising really fast but 20 stroked couldn't get her there. With a whine she pulled off of him feeling rather horny all over again but straddled him to stroke him off.

Just that alone, covered in pee, having to do squats on him, fucking his cock and in public was killing her. She pulled him out of her but she couldn't help herself, pressing his cock against her she slid her dripping cunt along his cock while stroking his member. It seems he finally snapped another part of her mind. Her free hand reached up and cupped the back of his head and pulled him in for a kiss but it was needy and with her tongue. Moaning against his lips she kissed him more passionately than she did her own husband.
 
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