With her holding her breasts in place, my hands started twisting and pulling on her nipples as my cock worked its way in and out of her mouth. Her visits in the future were going to be a lot more fun from now on.
Soon, I felt my fourth orgasm of the night building and surged forward, pushing the head of my prick into her mouth as the first burst erupted. I only fired a couple of ribbons into her mouth, before pulling out and standing on the bed over her as I continued to cum. I jacked my cock frantically as the next few salvoes landed on her face and neck before lowering my aim and painting her tits with the viscous fluid. I knelt by her head and let her swallow the last of it straight from the hose.
She was a mess; cum was running down her face and chest and I could see more still leaking out of her pussy. I quickly ducked into the guest room's en suite and grabbed a towel for her. "Might be best we get ourselves cleaned up," I suggested. "We've still got time for more, but I doubt we'd have time to clean ourselves up then." I may have been erring on the side of caution, but it was better than the alternative in the long run.
-------------------------------------------------
It was Friday morning, I could hear my parents go over their luggage once more. They were headed interstate for a conference - they both work for the same games development company and they have enough flexibility with their hours so that one of them can look after me - and wouldn't be back til Sunday night.
Since it was summer holidays, they'd asked Cass to look after me while they were gone and she could invite a friend over if she wanted. She'd also have free-reign over the house and use the pool whenever she wanted, along with the TV and any of the gaming consoles around the house (like I said; my parents work for a games development company, is it any surprise they'd have the latest consoles?).
Fortunately, my parents hadn't discovered what happened between me and Cass on her last visit the week before; my prediction that no-one would bother to check the guest bedroom and that they were going out the following morning for a few hours had both been right. I'd also managed to conceal my enthusiasm over Cass' next visit, though that was somewhat harder to do on Friday, when I knew she'd be here that day. So, after breakfast, I'd started up my computer and found a game of
Supreme Commander to both pass the time and to take my mind off any pants-tightening memories or thoughts.
That had been two and a half hours ago and I was still at that same game; the enemy players having formed an almost impenetrable defence and what damage we could do with each attack was repaired by the time our next wave of units arrived. At the three hour mark; we finally started making progress (albeit slow progress) when I heard a knock at the door.
Cass had arrived and mum invited her in, thanking her for doing this and repeating her promise of double her usual fee due to how long she'd be staying.