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

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

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

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 more poignant or harsher word for the abusing the common wanker/tryhard/yuppie douche-canoe

You're porno movies are on the shelf next to that fuck-knuckle with his shirty goatee in the corner

by Marty's ass September 25, 2020

Fatty fuck knuckle

A large, ignorant and lazy individual with poor hygiene. Smells like they haven’t wiped their ass since the 8th grade.

“Good job fatty fuck knuckle, you spilled your drink on me!”

by Jack Mahaugov September 16, 2022

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.

by Cereal Killer Bitch March 20, 2017