General dickhead. See also Fucker, Asshole, Cunt et al.
That's not my wife you stoopid fuck knucle!
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!
Wow jones was a fuck knuckle to jump off that roof!
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!
you know that fuckknuckle who got caught trying to break in to the police station
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!"
Brick-like intellegence coupled with new levels of arse-holiness
My boss is a real fuck-knuckle