Doof Share definition Flag A doof Is a dumb ass who can’t do anything right.By Glorious notorious Example think of Phineas Ferb Perry the platypus versus Doofenshmirtz Doofenshmirtz is dumb because he can’t beat the fucking platypus. Doof by Glorious notorious December 2, 2020 0 0 Get merch Get the Doof mug. Buy Now — $32.95 See more merch