whoopee chute 

Vagina. Term that expresses the functionality and pleasure associated with the vagina. Especially when used ironically in situations which prohibit deriving pleasure from the vagina, such as disease states. Originally coined by a prominent colorectal surgeon who believes that "good Catholics" should not use the word "vagina."

"So Ma'am, you have poop coming out the whoopee chute?" Used in reference to a colovaginal fistula.

whoopee chute by bm#2 January 1, 2010