Perennial Dumbass Share definition Flag Someone who's an unrelenting, year-round dumbass. (See also deciduous dumbass.) "Yeah, she just consistently makes the most moronic decisions, she's a perennial dumbass." Perennial Dumbass by Honeydew Melon Hater June 10, 2022 0 0 Get merch Get the Perennial Dumbass mug. Buy Now — $32.95 See more merch