Dale had been used to being the younger, skinnier brother. He'd been used to a lot of things. Like this shirt being an awkward and loose fit, not full of bulging muscles. Dale stood before his gawking friends, a changed man.
"I'm...I'm one of the jocks," Dale started, feeling the peaks and ridges of his new body. The supple fullness of his pecs. His solid, strong midsection with slight abdominal development.
"If I had to guess," his friend Tom started, "Dale, you are probably suited for the lineman position. You're bulky, suited for collision...brawn more than tone."
"I am not fat!!" Dale shouted, louder and deeper and angrier sounding than he meant to. "...sorry guys."
The others had shrank back, expecting the worst, but hey, this wasn't ending in a confrontation. Dale shifted in place and tested his legs, feeling the strength his brawny quads thighs and full ass were capable of.
"This is like...awesome..." Dale murmured.
"My guess? The jacket did it." Said Parker. He paused for a moment, "let me try it on."
Dale took the jacket off and handed it to Parker, "Sure thing, wonder if you're right..." Dale watched as Parker put it on. He wondered if it was gonna change Parker now too.
So thus the friends stood looking at Parker - waiting for results on their new jacket.