Scummy McBummy Share definition Flag A hobo, male or female, whom is pan handling in or around McDonald's. Get the hell out of my face, Scummy McBummy! I already told you, I don't have any change. Scummy McBummy by CatPoopFive December 14, 2010 0 0 Get merch Get the Scummy McBummy mug. Buy Now — $32.95 See more merch