Mr. Yuan left the store, promising to return soon with larger clothes. Guy paced, occasionally looking in the mirror at his swelling, mostly-naked body. Unable to resist, he raised his arms and flexed. His biceps rose, large and firm and steeply peaked. He had to admit, his 400 pound body would put any other bodybuilder to shame. "Fuck," Guy thought, "maybe this isn't a complete disaster..." He brought his arms down and flexed his pecs, the thick slabs of hard muscle bulging spectacularly, the striations deep and numerous. As Guy posed in the mirror, his cock started to get hard. It had grown along with him - a fact that was very obvious from the way it was pushing his jock out. Really, his bulge was quite obscene... Guy turned, looking at his massive profile in the mirror, thick pecs jutting, huge triceps flexed. He looked down at his immense legs and the impressive tent pushing his jock out, and couldn't help but smile. Fuck, this was hot.
Deep down, Guy wanted what was happening. And he wanted more of it.
Deep within, Guy felt a burning sensation. Looking in the mirror, he could see his body tremble and shake, and amazingly, he began to grow taller and broader, his muscles inflating steadily, filling his growing frame. He groaned, a low moan of pain and pleasure, as his body expanded, his already large muscles becoming insanely enormous. Thick veins streaked across the huge mounds of hard flesh, and Guy grew taller and larger, his body becoming inhumanly large. His jockstrap stretched tightly on his powerful ass, the glutes grown hard and large, capping unthinkingly large thighs. His dick was bigger too, and it stretched the front of the jock as far as it would go.
Guy looked in the mirror, and smiled. His rational mind was screaming that this was ridiculous, that this was insane, that he could never fit anywhere again, that he was a freak. He didn't care. No, he did care. He loved it.
Guy lifted one big hand to his massive chest, and cupped the thick, round pec muscle, feeling its heft and shape. "Fuck that's hot," he whispered in his deep, rumbling voice. His other arm rose and flexed, causing a bicep of insanely immense proportions to rise, hard and round and covered in veins.
"See, you get the body you wanted," said Mr. Yuan, who had returned without Guy hearing him. Guy turned to the little man, looking down at him over a massive shelf of pecs. Guy grinned. "Yeah, I guess I did."
"Well, I get you very big clothes!" Mr. Yuan laughed, smiling at Guy. He handed the massive man some new shorts and a tank top. "This enough until you can get to big and tall store," he explained.
Guy almost regretted having to cover up his huge body. He gazed at his reflection, taking in how immense he was. He had to be nearly six-foot-nine now, he estimated, and around 600 pounds. Regretfully, he pulled on the shorts, barely able to get the stretchy material over his massive thighs. The waist was too big, of course, but it had a draw string, so he was able to pull it shut. There was no hiding the massive monster in his crotch, though, even with the loose waistline. The tank top stretched very tight over his massive pecs, then hung off of them like a drape. Guy bounced his chest briefly, admiring the sight of so much flesh obeying his command in such a sexy way, and loving the feeling of the tight straps of the tank top on his torso.
"Thanks, Mr. Yuan," Guy called out, as he left the shop at last, his growth having finally subsided.