A nicer, and even douchier, term for the anus in reference for using the anus for sexual pleasures. It makes the anus not seem so disgusting by making the sexual explorer visualize the anus as its cleaner, more appetizing cousin, the vagina. I mean c'mon, whats the true difference between a anus and vagina when it comes to where you wanna stick the penis?
Bob-"So Jim, when are we making a sexy time?"
Jim-"Whenever you let me in that ass."
Bob-"I wish you would refer to it as my hiney vaginy, Jim."
Jim-"Your such a fucking douche bag, fagget"