Slumberdump Share definition Flag Where one makes the fatal mistake of dropping log whilst catching some Z's (In Bed)Wife: Poo-ee, what's that smell?Husband: I do believe I've slumberdumped during the night. Slumberdump by HooHaAlPacino July 21, 2010 0 0 Get merch Get the Slumberdump mug. Buy Now — $32.95 See more merch