I remember this one movie "40 days and 40 nights" where the main character gives up sex (any forms, including mastubation) for lent after a really bad break up with his girlfriend. During the course of the movie, not only does he fall in love with another girl and have to find other ways to romance her, but the vow gets a lot of attention from his friends and other people who apparent make it their life goal of sabotaging him. At one point, the main character asks one of his friends to tie his hands to the bed to ensure he doesn't give in and masturbate, and then while sleeping, a girl (I can't remember if it was the ex, or if it was someone else that had their eyes on the main character) gets into his room and has sex with him which causes him to freak out when he wakes up to see her on top of him. The big problem with that scene was that was a case of a woman raping a man, but it's not followed up as such, there was no consent from the man, she took advantage of the position he was in, and yet no charges were laid.