Fuck knuckle

An idiot, a dumb person.

Wow jones was a fuck knuckle to jump off that roof!

by Hayden The Sexy March 05, 2006

Fuck Knuckle

Someone who is intensely stupid, useless, or just plain ignorant.

"You can't clean a toilet with a rake, you stupid fuck knuckle"

by MichaelMayfall December 30, 2014

Fuck Knuckle

General term for somebody who is an useless idiot, ignorant, highly unpopular, or hated.

Commonly used by Australians to describe people in positions of responsibility who are incompetent.

Worker #1 - The boss says we have to make 34 more panels but we've only got two hours till knock off time ...

Worker #2 - Yeah right, what a fuck knuckle!

by Notorious S.T.I.F.F June 29, 2011

Fuck Knuckle

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

Fuck knuckled

When you are hoodwinked into an incorrect decision, based on a misinterpretation of facts believed to be correct or general idiocacy.

Damn, Ryan was fuck knuckled into selecting Waite in his SuperCoach team .

by Up_thedons June 17, 2016

Fuck Knuckle

A person who is equally a fuck head and who you want to plant your nuckel in.

Friend: Who's he
Me: Oh he's just some fuck knuckle
Friend: Wow what an idiot

by ThiccyBoii March 20, 2017

Fuck Knuckle

The painful bend in hard dick caused by pulling out too far and slamming your cock into the taint.

I was railing that bitch so hard I gave myself a fuck knuckle.

by XxxKevinxxX August 15, 2007