Bloody Buttocks Share definition Flag A term used as an exclamation when caught by surprise or also used when one is dumb-founded. Bloody Buttocks, Watson! Professor Moriarty, has once again eluded us by covering his tracks. Bloody Buttocks by Joe Nalgas February 5, 2010 0 0 Get merch Get the Bloody Buttocks mug. Buy Now — $32.95 See more merch