Crabarrhea Share definition Flag Liquid blowout from All You Can Eat crab night. Dude, I shouldn't have eaten so much at that seafood joint. I think I've got some BAD Crabarrhea! Crabarrhea by drillkid31 March 28, 2009 0 0 Get merch Get the Crabarrhea mug. Buy Now — $32.95 See more merch