Dustin grinned at the misshapen Ty, focusing on the parts of Ty that were still scrawny. Slowly, they began to grow, one by one, swelling up to match Ty's overdeveloped pecs and calves. His thighs rippled outward to match his calves, ripping off the rest of his jeans. His back swelled, and the last of his shirt tore off, leaving him standing nearly naked, wearing only his underwear. Finally, Dustin brought up Ty's arms, which swelled into thick limbs of bulging, veiny muscle. His stomach erupted into a six-pack, and his glutes grew and filled his underwear to the bursting point. Finally, with a chuckle, Dustin made Ty's cock grow as well, the member swelling until the underwear stretched, strained, and fell off.
"Lookin' good, little bro..." Dustin said, his own foot-long dick rock hard. Ty was still shorter, but his musculature was now thicker than Dustin's, making Ty look almost cartoonish. Only five feet tall, he had over 300 pounds of muscle packed onto his frame. Dustin grinned, and stretched him upward, making him taller, until Ty was a respectable 5'10" tall, still heavily muscled at 350 pounds, with a positively pornographic ten inch cock. Ty grinned, and looked in the mirror, flexing his huge arms, watching his 24 inch guns rise freakily.
"Damn Dustin, thanks! I can't believe how awesome this is! How good it feels!"
Dustin grinned back, but there was lust behind his smile. He put his hands up and felt Ty's biceps as they flexed. "Oh, don't worry Ty. You'll have lots of opportunities to thank me..."