Knuckelhead macSpazmatron Share definition Flag a fuckin Tard, somebody so stupid it defies belief, a complete arse, a fuck head.... that fuckin knuckelhead MacSpazmatron locked the keys in the car.... Knuckelhead macSpazmatron by Annie April 7, 2005 0 0 Get merch Get the Knuckelhead macSpazmatron mug. Buy Now — $32.95 See more merch