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15.
Made popular by iPwnstar4hire. When you get noob-tubed or pelted with coat hangers by your fiance. Often used as an expression
Fuck Knuckles. The whole team is tubing!
by TheBluestrype January 10, 2011
 
1.
General dickhead. See also Fucker, Asshole, Cunt et al.
That's not my wife you stoopid fuck knucle!
by Izzy Stewart April 08, 2003
 
2.
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
 
3.
An idiot, a dumb person.
Wow jones was a fuck knuckle to jump off that roof!
by Hayden The Sexy March 05, 2006
 
4.
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
 
5.
complete idiot
you know that fuckknuckle who got caught trying to break in to the police station
by John June 10, 2003
 
6.
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
 
7.
Brick-like intellegence coupled with new levels of arse-holiness.
My boss is a real fuck-knuckle
by morningwood faerie February 05, 2003