fuck knuckle 

Someone driving at such a low rate of speed as to piss off the driver of the huge truck behind them. Usually used to verbally encourage said person to hurry the fuck up.

"Let's go there, fuck knuckle."

fuck knuckle by KChute November 8, 2007

Fuck Knuckle 

The second knuckle of any digit when inserted into an orifice in a sexual manner.

I was fingdipin' this girl to the fuck knuckle after the baseball game the other day.

Fuck Knuckle by elcapitandeganja October 18, 2013

Fuck Knuckle 

A man with such a small dick that all it feels like when he fucks a woman is him fucking her with the knuckle on his fist.

HER: Enough playing around stick it in already
HIM: What you talking about Willis? It is in!
HER: I should have known you'd be a fuck knuckle.

Fuck Knuckle by Cereal Killer Bitch March 20, 2017

fuck knuckle 

Someone who is a complete and utter idiot.

1. Don't be such a fuck knuckle.
2. That fuck knuckle crossed the highway without looking.
3. If you're going to be a fuck knuckle, you can piss off.

fuck knuckle by xxxxmints May 17, 2017

fuck knuckle 

When said person is being annoying or is being a headass

Person 1: “God, Michael is being such a fuck knuckle”
Person 2: “You can say that again”

fuck knuckle by CurseWordGenerator2000 January 28, 2019

fuck knuckle 

A slang term for a dumb mother fucker who really does not understand they are a dumb mother fucker.

After a lame conversation I had to say, “He is such a fuck knuckle”.

fuck knuckle by Wayne Schlinger & Kevski September 23, 2021

fuck knuckle 

Someone who is beating off, fucking their own hand fuck knuckle

Hey fuck knuckle stop beating off

fuck knuckle by Invented that word December 10, 2024