Girl: Sucks a guys dick.
Guy: Sucks a girl's pussy.
unless you're gay... but then, well ya know, vice versa.
2. When one partner makes the other horney and wants the other to have an orgasm.
Guy: "I think I wanna eat out for lunch.."
Guy 1: How far have you gotten, dude?
Guy 2: I can skate around the block.
Guy 1: that's fuckin awesome!