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Spreading (Scrum & DonVoltonus)

S

Scrumdiddlyicious

Banned
Banished
Joined
May 27, 2017
Lance had been feeling weird all day, his legs aching and the skin feeling dry and itch, almost like it was crawling. Because of that school had been utterly miserable for the entire day, well, moreso than usual, and afterwards rather than spending some time at the library or arcade as he usually might Lance had come straight home and dropped onto his bed in order to try and relax his legs, though unfortunately it didn't seem to be working and the odd sensations were only getting worse. "Ugh...come on, the hell is going on with me...? Must be the side effects she mentioned might happen..."
Over the weekend Lance had gone for a strange medical trial. It was pretty weird, it hadn't been advertised online or in the papers or anything, but was just a woman in a labcoat standing on the street, seemingly watching most people go by but had ended up approaching Lance. He'd been skeptical at first, very skeptical, but she'd offered a nice chunk of money and, to be quite honest, she'd been hot and Lance was always a sucker for a hot woman taking advantage of him, though sadly not taking advantage in the way he would prefer. It had all been very clinical, she'd given him an injection and sent him on his way with an envelope of money and a very vague warning of potential side effects. Now he thought about it, she hadn't even really told him what the trial was about or what the shot was supposed to do.

As Lance lay there he closed his eyes in an attempt to relax, trying to keep his legs still but he figured they were twitching involuntarily. With his eyes closed he didn't even notice the strange movement in the fabric of his pants, like something inside the garment was moving and wriggling around for a few moments then settling back.
 
Talia, his younger sister, walked in. "Are you okay Lance? You've been looking strange all day." She sat down on his bed, the back of her hand to his head, still in her tight uniform from her nursing class. "Does anything hurt? Maybe I can help you." She smiled, she's always been very close with her brother, perhaps a little too close.
 
When Talia entered the room Lance felt rather strange, and all of a sudden very very aroused. As Talia approached his bed Lance's pants quickly and very noticeably tented as the hardest erection he had ever felt formed between his legs, though he wasn't really in any position to try and hide that fact. "Oh uh...hi sis....I'm fine, just a little tired I think...." He shivered as her hand touched his head, the contact of her skin seemed to send a jolt through him, and his legs felt even stranger. What neither of them would notice however was the blue tendril starting to emerge from the base of one of Lance's pant legs, slithering across the bed towards Talia's back.
 
"You are certainly not fine." She leaned over, skirt riding up, revealing she'd gone commando rather than do laundry the night before. "Look, you're pale and sweating bullets!"
 
"Well...maybe it's just a cold or something..." Lance shivered as she leaned over him, her breasts getting tantalisingly close to his face, the erection in his pants visibly twitching and throbbing. The legs of his pants seemed to bulge slightly, almost as if his legs were thickening, and the tendril that had emerged grew thicker as it came closer towards Talia, starting to lift up behind her.
With a loud gasp Lance clenched tightly at the bed sheets, whimpering in pain, then crying out in relief as his pants suddenly exploded, revealing his legs now gone, replaced with a writing mass of countless blue tentacles, the one that had emerged before suddenly wrapping around Talia's waist tightly, several more shooting out to grasp at her wrists and ankles.
 
"What the fuuuuuuuck!" She screamed and she was suddenly grabbed and lifted, thrashing about. "Something is very wrong lance! Very wrong! Dammit I can't reach my phone to dial 911!" She thrashed, clawing the tentacles with her nails.
 
"I...I can't control...Talia I don't know what-" He cut off and cried out in pain when she clawed at one of his tentacles with her nails, the mass quivering and then tightening its grip onto her ankles to keep her from attacking again. Several more of the tentacles moved in closer, starting to slide up her legs and under her skirt, beginning to brush at her ass, then stroking against her exposed pussy, Lance quivering and moaning softly as he felt the sensations through them. At the same time others were moving up the front of Talia's body, moving beneath her shirt and up towards her breasts, starting to curl around them and squeeze at the large fleshy orbs, whilst one final tentacle was stroking at Talia's cheek, though seemed hesitant to get too close to her mouth after the recent attack with her nails. "Talia...I don't know what's going on...I can feel them but I can't control them" Lance's body was being overwhelmed by strange hormones and instincts, he still had control of his human upper body, but the tentacle mass that was now his lower body was unresponsive to any attempt he made to control it, currently being driven entirely by instinct.
 
"Fuck..." She whimpered. "Well I can't hurt them bro, I'd just be hurting you..." She blushed. "It seems we have no choice...you can ravish your poor little sis with your big...thick tentacles..." She murmured.
 
"I uh..." It was rather unusual to hear his sister say that, though truth be told that was probably the least unusual thing about this entire situation. Even so, the tentacle part of his body seemed to somehow grasp Lance's understanding, and without hesitation the tentacle stroking her cheeks suddenly moved and pushed itself into Talia's mouth before she could close it, Lance moaning loudly as he felt every sensation through it. Between Talia's legs the tentacles continued to stroke at Talia's pussy, before suddenly one of them thrust its way inside of her, the other moving towards her ass now that it had lubed itself up from her pussy, teasing at the tight hole for a few moments, before forcefully pushing inside as well. Lance gasped and clawed at his bedsheets as Talia was suspended in the air above him by his tentacles, his hips bucking and thrusting up towards her out of instinct.
Where his cock had been was a tentacle rather different from the others. It was still blue, but retained the more human phallic shape, though it was significantly thicker than any human cock. This tentacle was special though, and was only for use in very certain situations..
 
She moaned into the tentacle, trying to move her hand to reach for his tentacle cock, eyes glazing over with pleasure, panting and moaning, her slender hips bucking. "Bet you always wanted to do this to your poor sister." She mumbled through a mouthful of squirming flesh.
 
The tentacle in her mouth had pulled back as she mumbled, allowing Lance to understand what she was saying, blushing and glancing away as he laughed nervously. "Well uh...a guy can't help but have some fantasies right?" He grinned, then gasped and moaned loudly as the tentacles all thrust deeper inside of her, the one in her mouth forcing its way down her throat, the one in her pussy thrusting up through her cervix and starting to thrash around inside of her womb whilst the one in her ass was pushing ever deeper towards her stomach.
The tentacles grasping onto Talia's wrists freed her so that she could use her hands, now suspending her by her waist and ankles instead. Inside of her shirt the tentacles playing with Talia's breasts were growing rougher, squeezing and massaging her, whilst Lance's own hands reached up to pinch at her nipples through the fabric once she came down close enough.
 
She moaned and gagged slightly, reaching out and stroking the thick, pulsing cock tentacle. "Ooo wanna breed your poor sister you perv." She choked out, pulling a bit at the one in her mouth while rubbing the cock with her palm. "You dirty boy...all you had to do was ask."
 
Breed her? Did he want to breed her? Yes...god yes. Lance didn't know what, but something deep down inside of him told him that yes he absolutely did want to breed his sister. Not just his sister though...he wanted to breed whoever he could...he needed to breed...he had to breed! "All...all I had to do was....ask...? Even...even before?" He grunted and moaned as she started to stroke the thick tentacle cock, far thicker than any of the others, whilst his other tentacles continued to thrust into her pussy and ass, one thrusting in as the other pulled out so that she was never empty of something.
 
She panted hard, pulling the tentacle out of her mouth. "Yeah, you'd always been a bit of a crush for me bro." She panted hard, her skin starting to become a bit paler from the change. "Now take this tiny tentacle out and give your sis this strange new cock." She smirked, lost in a pleasure haze.
 
God he should have done this before his body had changed...to think he could've had his sister anytime and he had never realised it! Still, it was time to make up for lost time now. Whilst Lance didn't have conscious control of the tentacles they seemed to get what Talia wanted, and the tentacle in her pussy suddenly pulled out of her, though within moments it had rammed itself into her ass alongside the one already there. Her body was then shifted so that she was above the huge tentacle cock, the head the size of a large fist, then lowered her down, pressing her pussy firmly against it, the tentacle around her waist and ankles pulling her down until the tip started to force its way inside of her, Lance moaning loudly, all of his tentacles, both inside and outside of Talia's body, writhing wildly.
 
She groaned and panted, body already changing to stretch and alter her chemistry to carry a parasite within her. "Ohhhh, Lancy..." She whined, reaching out to try and lay atop him and grip at his shoulders, still dressed in her cute little uniform. "Please, relieve all this pent lust in me."
 
Lance was all too happy to comply with that request, he'd have been all too happy to comply with it even before today. "Nnngh...T-talia!" He reached up to grasp at her breasts once more, both his hands and tentacles squeezing them now, along with pulling her further down on his giant tentacled cock, the huge rod of flesh sinking deeper and deeper into her body, the tip pushing at her cervix for just a moment before forcing through. "Ooooooh! S-so good...."
 
She moaned out, body fully altered now to accept him, squeezing her slick cunt around him. "Two fantasies in one..." She panted, rocking her hips. "This day couldn't get better."
 
Lance panted as his cock and tentacles were now pumping into his sisters body, he couldn't take this anymore though, his body was too inexperienced, and this just felt too good. The regular tentacles started to bulge and push deeper into Talia's ass, before suddenly erupting with cum inside of her, pumping it deep inside. Outside of her body other tentacles started to cum as well, the ones inside of her shirt and squeezing at her breasts began to spurt cum inside of her clothing, whilst the others now spread all over the room began to squirt thick cum all around them.
The cock meanwhile bulged even thicker, and first began to spray thick fluid directly into Talia's womb, but there was something else. Some kind of bulges travelling along the cock, rising up through it, before something solid was suddenly deposited into Talia's body, Lance crying out in pleasure with the release of each one. A first, a second, a third then a fourth....four tennis ball sized eggs being deposited into Talia's womb.

As soon as the last one had been desposited, along with several more thick spurts of cum, the tentacles and cock withdrew from Talia's body, releasing her waist and ankles, dropping her down ontop of Lance's body.
 
She groaned and shuddered in orgasm, something audibly cracking. "Lance....There's one...hatching..." She groaned, squirming about as her belly bulged quite a bit, eyes rolling back as she seemed to enter a trance. Her throat bulged, a tentacle slithering up and out of her mouth, opening to speak. (NSFW) "Hello, Prime. Your sister is now home to a copy of you, and three of your eggs, she will begin to help you spread soon. Do not worry, aside from increased sex drive she will be just fine. As part of you we hear your thoughts, we know you do not want your kin reduced to a drooling fuckslave."
 
One was hatching? Already? Was that good? Bad? Lance had no idea, but he gasped as he watched his sisters belly bulging outwards, then squeaked in surprise as a tentacle suddenly slithered out of her mouth and actually....spoke. He stared in shock for a few moments, then only managed to say the first thing that came to mind. "....Hi" He blinked, feeling a little relieved as the creature said his sister would be fine. This thing...it was a part of him? Well, that kind of made sense....it was both his offspring and a part of him, an extension of his body. "Um...right...so...I think I get it...so everyone I lay eggs in will have something like you...along with three more eggs, right? And they'll...help me spread" He glanced around the room, his tentacles already having spread even further, having fed off of his sisters sexual fluids to grow. "This is...going to take a little while to get used to"
 
"I would expect so, you've been living under the impression you were human until now." It chuckled. "If your sister has friends she'll easily spread you into them, though most young will just be born and hidden away to grow."
 
"Under the impression I was human....?" Lance blinked in confusion, what was that supposed to mean? "Are you saying....I'm not? So...is Talia not human either? But what about mom? And...well, I guess dad hasn't been around for as long as I remember. Wait, was...are you saying dad wasn't human? He was some kind of alien or monster or something?"
 
"This girl is human, likely two fathers. Either way, if your try hard you should be able to withdraw the tentacles to disguise yourself back into a human."
 
"Ah..right..." Lance nodded slightly, so Talia was likely his half sister rather than his sister....well, it didn't really change anything. It was good to know he could possibly still disguise himself as human, though right now he kind of liked the feeling of his tentacles spread all across the room, it was an oddly relaxing feeling. "Could I uh....could I talk to Talia again now? Will she know you're inside of her?"
 
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