people do it all the time, i've heard (dont take this offensively, i just have a gay friend and this is what i heard from, btw he doesn't do it)that people in the gay community do it alot cuz it makes getting off like 10x better while doing it cuz of the shit rubbing against the prostate (which is logical, because if you do get your prostate "massaged" while getting off it does make it more intense) i'd never try it, and i would feel bad for any girl (or guy for that matter) that got conned into doing it....but it does happen...dunno if what my friend told me was true or not but i do know this shit happens (no pun intended.)