Poo-linky Share definition Flag The act of poo falling down the stairs in a slinky like motion. The Poo-linky could be a single turd flipping end over end down the stairs, or diarrhea cascading down the stairs. Poo-linky by scotche December 2, 2009 0 0 Get merch Get the Poo-linky mug. Buy Now — $32.95 See more merch