muddy graffalo Share definition Flag A position where the male licks the female's vagina and the female sucks the male's penis...when the female has diarrhea. Matt didn't realize his girlfriend was taking laxatives and was surprised with a muddy graffalo. muddy graffalo by assmilkman September 7, 2011 0 0 Get merch Get the muddy graffalo mug. Buy Now — $32.95 See more merch