Kind of off topic, but has anyone seen a clip of a (possibly and probably Japanese) show where they dress guys up as women, invite straight guys in and offer them anal sex with these men dressed as women (the only "catch" being they have to be filmed), then when they've finished having sex the guys get told that they actually screwed a guy in the ass, rather than a girl? They film the whole thing, tell them afterwards that they've just had gay sex, then film their reaction.
I think that would be the worst thing to be told after sex, that you've just screwed a guy in the ass when you thought it was a girl.