"Woof," Dan turned to a rumbling bear filling his doorway. A few inches taller with a tank top that barely contained his beefy frame and couldn't hide the bottom of his round gut. "I'm Adriane, your roommate." He casually sauntered closer, his package pressing into Dan's gut before he leaned in for a kiss.
"Mmmm...I'm Dan, n-nice to meet you." He stammered, blushing as he felt his heartbeat creep up, throbbing in his ears. Adriane's cock was rapidly swelling larger. Too big for his workout shorts, it popped over the waist band, dribbling thick globs of pre as it grew hard, pressed between the two bears.
"You are such a cute lil' cub," he reached down, kissing gently as he groped at Dan's modest 12-inch cock. "Oh man...I love it when guys have smaller cocks--" He swiftly crouched down, practically ripping Dan's trunks off as he started licking over his cock.
"Yo! Adriane!" Two thick bears were wedged in the doorway, each one sporting an overflowing speedo and bodies that would make any powerlifter jealous, "Tell your roommate to meet us at the pool--come on, we'll be late." Adriane reluctantly gets up, tucking in Dan's cock as he kisses him goodbye.
Dan slides down the wall, panting. "Wow..." He staggers up and rolls onto his bed with his laptop. Lost in a horny daze, he pulls up the Chronovac. "Man...this world is amazing," he thought to himself, "And yet..."
He pulled up his standard curve modification. He loved being "small" with a 12" dick in a world where 24" was average. Why stop there?
Adriane's gut felt so nice pushing him against the wall...what if it were bigger? He typed in a few commands setting the average belly at a hard 60" around...like a giant beach ball was stuffed under the skin.
He started stroking his cock, navigating the Chronovac with his right hand. In the old world, Dan used to spend all day trying to find new muscle morphs and growth stories...and with a couple clicks, the median amount of skeletal muscle was 300lbs.
Dan excitedly pressed save...his body flushed with warmth as he gained more muscle, followed by his gut pushing out a couple more inches. Stepping away from his laptop, Dan checked himself out in the mirror, rubbing his hands over his gut and bouncing his new beefy chest.
"Time for the pool" He grinned, wiggling into a skimpy speedo which barely contained his package.