Dirty Dundy Share definition Flag When you smear you girlfriends body with mud or chocolate then ride her asif she is a filthy pig in a pig-sty whilst going 'oink' Damn, i gave that girl the dirty dundy Dirty Dundy by Jack Lindsey January 21, 2009 0 0 Get merch Get the Dirty Dundy mug. Buy Now — $32.95 See more merch