Hippoglumpus Share definition Flag An adjective I made up to annoy my girlfriend, because she can't figure out what it means. Me: Damn, that's really hippoglumpus! :) My girlfriend: I hate you. Hippoglumpus by HiSarah:P May 30, 2022 0 0 Get merch Get the Hippoglumpus mug. Buy Now — $32.95 See more merch