Hump n Dump Share definition Flag The act of having sex and then breaking up with that chick/dude immediately afterward. Hey dude, you totally pulled a hump n dump last night with that chick! Right on brah! Hump n Dump by deutschcanuck September 27, 2010 0 0 Get merch Get the Hump n Dump mug. Buy Now — $32.95 See more merch