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.

by xxxxmints May 17, 2017

fuck knuckle

A person so dumb they can't tell the diffrence of a penis or finger and think the knuckle on a finger is the end of the dick head.

That bitch was so gross I couldn't get hard. So I fucked her with my finger and told her I have a small dick. She said the end of my head was big she is so dumb what a fuck knuckle

by Rawdog75 January 13, 2025

Knuckle Fuck

Getting fucked while your balls are vibrating from the wavelengths of Knuckle Puck’s live performance.

Ugh, I can’t wait to get Knuckle Fucked in Orlando in 2 weeks!

by TaraWard10 November 21, 2023

fuck knuckled

to go knuckle deep into the anal regions of the other gender while your other knuckle is 5 inches deep in their other genital region.

you have just been fuck knuckled by him

by Gizard XD February 28, 2017

Fuck-knuckle

Look up Donald Trump on Google if you are unfamiliar. (Absolute retarded fuckwit cockhead).

What a fuck-knuckle.

by #CoronaTime_420_69_51 March 24, 2020

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”.

by Wayne Schlinger & Kevski September 23, 2021

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”

by CurseWordGenerator2000 January 28, 2019