Wave upon wave of pleasure flowed through Johnny's body and mind as he explored his ever-growing bulge. It was like an erotic fire had been ignited and all his senses were aflame with sensation and anticipation, and each caress of his hands just stoked this inferno further.
And all the time his body continued to grow and expand. Looking at himself he realized he'd gone beyond the realms of the wrestler and was now resembled a top amateur bodybuilder. But that was becoming increasingly incidental, since his mind was being filled with the sensation coming from his crotch.
'Man, this is so intense...' he murmured shakily as the pressure began to reach a new unbearable crescendo, and then all went black.
Johnny opened his eyes with a start and realized he was looking up at the ceiling of the room he was in. The erotic sensation that had sent him to the edge of bliss before he'd black-out was gone, but was now replaced with an uncomfortable heaviness.
'Shit, the shirt's stretched as I grew...I've still got it on.' Johnny tried looking round, but all mobility had long since since as the muscles of his neck had grown and bulged into a column thicker than his head. Together with an obscenely thick set of traps which were now touching his ear, Johnny could only look forward. And besides, even if he could have moved his head all he would have seen is delts and pecs.
Johnny tried to summon some mobility in other parts of his body, but all efforts were futile; massive quads and hams splayed his legs out wide and bulbous calves ensured he couldn't bend of the knee. His arms were in a similar situation; he tried bend them but his huge forearms met his still growing biceps instantly - he had even lost flexibility in his hands as the flexor ligaments in his wrist and grown. His arms were also locked at the should as heavy delts, the size of bowling balls and an ever growing chest barred any movement by his arms across his body. Abs the size of large cobblestones also prevented him from bending forward. Although he was undoubtedly the strongest man alive, his muscle prison meant he couldn't rip off something as flimsy as a t-shirt.
'God, when will this end' he thought to himself, and then realized even if he could get the shirt off he might be like this way permanently. After all when he'd tried it on the first time and then taken it off, the 'improvements' to his body it had made didn't go. A renewed pang of terror ran through his body.
'Someone help me', yelled the terrified teenager.