Top Definition
General dickhead. See also Fucker, Asshole, Cunt et al.
That's not my wife you stoopid fuck knucle!
by Izzy Stewart April 08, 2003
Can be used to describe a person who is generally a dickhead, or used when something goes wrong.
A) You are such a fuck knuckle

B) Fuck knuckle!
by ~primakat~ August 05, 2005
A derisory term used to denote a particularly ineffective or annoying person or thing.
Refering to a Person: My fuck! What a useless cunt! I declare him to be an absolute fuckknuckle!

Refering to a thing: I'm not eating that processed fuckknucle Subway calls a sandwich!
by Reginald Whattabone March 01, 2005
complete idiot
you know that fuckknuckle who got caught trying to break in to the police station
by John June 10, 2003
Similar to definition 1 for Fuck Nuts
Specifically a name for somebody you know and despise in one way or another.
"Have you met Wendy's new boyfriend Eric? Man, what a fuck knuckle that guy is!"
by Simonator May 04, 2006
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