I have no idea, I'm pre-everything. But I have heard phalloplasty and other penis surgeries are without foreskin. Foreskin is so hard to make, therefor they are without it. If you watch episode 2 of "My transexual summer", the TV-show, you can see how a trans man's penis looks alike.
Mod Edit- TOS 4 video shows things that break TOS 4 due to nudity.