fucked in the head Share definition Flag 1. Idiotic, stupid, not too clever. 2. Insane, crazy. "I hear your cousin crashed his car again." "Yeah, the guy's totally fucked in the head." fucked in the head by Jenesis September 9, 2004 0 0 Get merch Get the fucked in the head mug. Buy Now — $32.95 See more merch