dr. fuckass Share definition Flag Someone who has a really big head and uses immature potty humor, usually between the ages of 4 and 10 That kid down the street Andre called me a smelly vagina face. His name should be Dr. Fuckass dr. fuckass by bigbreezy5 November 1, 2009 0 0 Get merch Get the dr. fuckass mug. Buy Now — $32.95 See more merch