What you're feeling when your bladder is full, however, is not a fetish. It is a normal part of biological functioning--a result of the pressure your urine is putting on your "g-spot." Your g-spot is a highly pleasurable bunch of spongy erectile tissue about the size of a quarter, located a few inches inside on the front wall of the vagina, directly in back of the bladder.

Some people stimulate this area directly by pressing on it or rubbing it with a finger or some other object. Your method is simply a more subtle way of stimulating this part of the vagina.

Rest assured that feeling pleasure from the g-spot is completely normal. It is a feeling shared by many women who actively stimulate the g-spot as part of a healthy sex and masturbatory life. Enjoy the exploration.

Take care.