I try to only do it when I know it will be empty or if Im worried about getting caught, I have the excuse that Ill just say I thought it was a mens bathroom. Only reason I do it is because it gets me off, when I get home I masturbate to the thought, knowing the types of different women that have sat on there. I know its a filthy habit, but I cant really get sick from it or anything, so Im not too worried. Me and my ex-girlfriends mom hooked up two days after we broke up. I had sex with my friends 17yr old brother. But he was a very close friends younger brother, I have always been attracted to him.