Interesting. I, too can do this, and have kinda wondered about it. It feels like it comes from inside the pelvis, really. Doesn't hurt, and I've found 2 ways to do it. One is to press down on the top during an erection as if to bend it in half towards yourself, the other is to just pull down. The first way is easier imo.
Posts made by Xtra_Zero
RE: The Penis Joint?