knulp Share definition Flag Violently disfigured male genitalia, with a smell like that of a rotten corpse Person 1: "Did you know that Morten has a knulp? Person 2: "Ewwwwww" knulp by fatsmurfshit January 9, 2020 0 0 Get merch Get the knulp mug. Buy Now — $32.95 See more merch