i see what you're getting at, it would be a cool idea. however the odds that it's going to happen is like...none. all the guy friends that we hang out with would make fun of us. no matter how much we gain they can always say "yeah well at least mine is natural" now i'm a good trash talker, but that would always get to me. and that's just from your peers..
i mean i told women and they love it, fascinated..hell got laid plenty of times because of it. curiosity on their end is great...so i guess to some that would be more than enough to parade around in a shirt. but for those guys who are off the market? it's not going to do much