|Seriously, people? SERIOUSLY?|
Assuming that the searcher was actually interested in finding out about pissing THROUGH the vagina, rather than some type of sex-play involving pissing IN someone ELSE'S vagina (which, now that I think about it, could totally be what he or she was going for in which case EW, OMG, please pass the brain bleach!), then this person would have been better off googling "female urogenital fistula," or "vesicovaginal fistula." These are real conditions. You may, if you were an Oprah fan like my mom, even have seen an episode of Oprah about poor women in Africa with these problems and gone around for the next six weeks grossing everyone out by bringing up the subject while they were trying to eat. Anyway, in case our poor searching person comes back here looking for information about it, suffice it to say - sometimes, for a variety of causes including botched surgery, problems with pregnancy/labor/delivery, malnutrition, etc, a tunnel of sorts opens up between the urinary bladder and the vagina (or sometimes the uterus or cervix) resulting in uncontrolled leakage of urine out through the vagina. Affected women are incontinent and often malodorous.
Please see the informative article here: http://emedicine.medscape.com/article/267943-overview for additional information on this unfortunate malady.
Thus endeth today's VBB foray into medical problems in the one species we are not licensed to diagnose or treat. Please don't report us to the medical board for practicing without a license. Thanks for stopping by!