Piss In My Ass Share definition Flag An expression of great displeasure upon an upsetting circumstance Dan: Hey Rob, I think your fly is undone Rob: Oh piss, piss in my ass Piss In My Ass by Dan H LZHS February 18, 2008 0 0 Get merch Get the Piss In My Ass mug. Buy Now — $32.95 See more merch