Poo worm Share definition Flag The inch of shit that is lodged in a man's urethra after performing anal on someone. After fucking his girlfriends ass, had to go piss out his poo worm before he could cum. Poo worm by bitchtits96 September 19, 2006 0 0 Get merch Get the Poo worm mug. Buy Now — $32.95 See more merch