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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”
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.
Look up Donald Trump on Google if you are unfamiliar. (Absolute retarded fuckwit cockhead).
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
It is when you clock a muther fucker in the face while you have your middle finger extended.
Dude this chauch was talking serious trash at the club last night, so I straight up Knuckle Fucked his ass.
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.
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!