Beaner Dump Share definition Flag When one sits gently on a cactus and takes a giant creamy shit so that it looks like nutella or chocolate soft-serve icecream on top of a cactus. guy 1: Dude, theres no place to shit in the desert.guy 2: Just go take a beaner dump. Beaner Dump by XOXOYOURWELCOMEXOXO October 29, 2011 Get the Beaner Dump mug.