I've been with my girlfriend for two years. She's a 22 year-old black woman,real pretty and has a "coca-cola" bottle shape. She always wears tight blue jeans(with no back pockets)that really shows off her nice, plump ass. Anyway, I have a fetish for women pissing their pants(mainly, tight blue jeans)and I was wondering how do I get her into it or should I keep my fetish to myself?