Jay fucked Sean for the next two hours, using his massive new body to pound Sean in all sorts of inventive ways. Jay's incredible strength made him able to hold Sean up in all sorts of positions, and Jay took full advantage of this. And once Sean got over the incredible shock of taking Jay's monster cock, he started to really enjoy it. Especially those huge muscles of Jay's... Sean even began to moan in pleasure, clutching at his massive roommate, begging softly for more, more, more! Jay happily obliged, ramming his huge muscledick up Sean's tight, hungry pussy.
Jay was having an amazing time. He had wondered if he wasn't going overboard with this new body. But already after ten minutes of fucking Sean silly, he knew he'd made the right choice. To have so much power, so much muscle packed on to his body... it was a huge turn-on in and of itself. And now that he was fucking Sean, the size and strength of his new body was enhancing the experience in ways he'd never realized. Jay loved his huge, musclefreak body.
And so did Sean. So when Jay finally tired, Sean waited. Waited for the big brute to fall asleep. Then Sean carefully disentangled himself from Jay's massive body, and went over to the Chronivac. Oh, that marvelous machine. Sean considered enhancing himself, or maybe taking Jay down a notch or three. Certainly, it would be deserved, he thought. But he also thought back to the fuck he'd just gotten: two hours of a massive musclestud fucking him with that big cock... Sean yearned for more, to be frank, and the Chronivac gave him the opportunity to get just that: more.
Sean pulled up Jay's profile on the Chronivac. He looked it over, and after several minutes of careful consideration, made a number of changes. Once finished, he ordered the computer to stretch the changes out over the course of the next ten minutes. Then he hit 'enter' and sauntered back to where Jay lay. Sean ran his hands over Jay's massive chest, feeling the big man's mighty pecs, wondering what they would feel like even bigger and stronger. He'd know in a moment... Sean couldn't help but giggle just a bit.
Beside him, Jay stirred. Slowly at first, but then with increasing speed. "Oh fuck man..." Jay groused. But his grumpiness quickly faded as he felt something else, deep within: the spark of growth. Jay turned to Sean, not sure if he should interrogate the man or kiss him. Sean blushed a little, causing Jay to grin. Jay knew what Sean had picked. And at that thought, Jay's cock got harder. He grabbed Sean and roughly slung the smaller man over one shoulder, like a sack of potatoes, and took him to the bedroom. Jay flung Sean on the bed, and joined him right after, huge and horny. And as Jay moved toward Sean, his body slowly began to swell, bit by bit. Sean panted with lust as he watched Jay's already massive body get even bigger, adding muscle with each passing second.
"Couldn't get enough of Jay, huh?" the behemoth asked, a cocky air to his voice. Sean just laughed and grabbed Jay, trying to pull the big man onto him. Jay's grin widened. "So, you want more Jay, huh?" The big man asked. Sean grinned wider, and nodded slowly. Jay laughed in his booming voice, and grabbed Sean's hips, bringing them into position. With a quick thrust, Jay's cock slid home, plunging deep into Sean's magical pussy. Sean shrieked in pleasure as he felt that big rod enter him. And Sean's moans of joy continued, as he felt Jay get bigger and bigger, the man's muscles swelling way beyond what was human. Getting taller and thicker, his muscles fuller and more powerful than ever. Sean could barely get his hands onto both of Jay's gigantic lats, and reaching around for a full hug was impossible; Jay was simply too big. And Sean loved that.