humpdity dumpdity Share definition Flag When a girl has to shit when you give her anal and she pops it out when your still in. What the fuck bitch!? A humpdity dumpdity? Come on! humpdity dumpdity by Boyzee Bonkers July 6, 2008 0 0 Get merch Get the humpdity dumpdity mug. Buy Now — $32.95 See more merch