When a guy's dick is soft so he squeezes the base and tries to fuck till its hard. While holding the base he hit's the other person repeatedly with his knuckles.

Well if it goes soft we have to take a break. I hate when a guy tries to knuckle fuck me. I end up with bruses.

Knuckle fuck by Wonder77 December 25, 2016

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knuckle fuck

its not punching, its when you fuck someone hard in the face....with your knuckles

johnny t-bagged my roommate and then left with the pizza so when he came back looking to borrow some money, i knuckle fucked the shit out of his face

knuckle fuck by diego delavega June 30, 2006

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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.

Knuckle Fuck by AbsorbedSpoon3 July 5, 2019

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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!

Knuckle Fuck by TaraWard10 November 21, 2023

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