Knucklehead

A nickname associated with fans of the heavy metal band Five Finger Death Punch.

Judging by his 5FDP shirt, he must be a Knucklehead.

by Tank238 October 15, 2012

Knucklehead

A young and wild skinhead, normally a fresh-cut, probe to getting drunk and getting in fights.

That fresh-cut, Jimmy, is going to get beat-up if he keeps being a knucklehead and pissing off the older guys.

by Blownaparte August 09, 2014

Knucklehead

receiving a wicked blowjob while the woman masterfully utilizes her two hands in the dirty deed

Suzy gave me the most tremendous knucklehead last night.

by Headmonger August 14, 2008

Knucklehead

The act of shallowly fisting while simultaneously fellating one's partner.

The new guy at the Rainbow Room gives mind-blowing "knucklehead".

by 6fireguys November 17, 2013

knucklehead

From the 1930's (circa). Refers to a person of questionable intelligence. The size of the brain being given relative size of a human knuckle. Similar to pinhead.

That guy just sat on a bench with wet paint. What a knucklehead.

by The Phat Doctor December 28, 2004

knucklehead

A dunce. A dummy. A very stubborn person or animal.

I told him how to do it, but he would not listen, the knucklehead!

by Merrily McCarthy July 18, 2003

knucklehead

a person who doesn't listen, and stays in trouble

Dat boy a knucklehead he stay in trouble.

by J-Wilk May 07, 2007