Knuckle Fuck

When hitting a large jump (booter) mainly on skis there is a roller or knuckle that the jump sits on. If you hit that jump and land a little short that is called a case. But if you case the jump so hard that you are ejected from your skis and you thrust your body so hard against the landing that is called a Knuckle Fuck because you are fucking the knuckle.

Dude, that guy hit the pro jump line and knuckle fucked the last jump.

by AbsorbedSpoon3 July 5, 2019

fuck knuckle

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

Hey fuck knuckle stop beating off

by Invented that word December 10, 2024

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

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.

by elcapitandeganja October 18, 2013

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

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