He didn't know why but as he'd progressed through my program going from chubby to this well constructed himbo hunk. He'd also started preferring skimpier and skimpier clothes now ending at jockstraps only. It just felt better to have your new plump ass out and muscles showing...
A mutual share with me this manga and i wanted to share it too sorry I'd it looks a bit weird I only found it on japanese and use Google translate for it.
Basically is a guy that has a muscle Rental shop where you can borrow kg.of muscles as long as you give it back + interest
"Yo bro put this on!"
Soon as his dumb jock roommate put the cap on him it was all over. All the PhD student's smarts went right into his dick. Now he's been stuck like this for days, trying to resist and get the cap off, but the longer it stays on, the dumber he gets