When a woman wipes her butt back to front after a poo, thereby wiping feces into her vagina, giving her poo-poo vagina.
Dude 1: Ah shit dude, I went down on this girl and she had a case of the poo-poo vagina.
Dude 2: poo-poo vagina's the worst!
Dude 2: poo-poo vagina's the worst!
by The Poop Monster December 4, 2013