by Invented that word December 10, 2024

Dude this chauch was talking serious trash at the club last night, so I straight up Knuckle Fucked his ass.
by Freak Sho September 26, 2010

by CurseWordGenerator2000 January 28, 2019

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.
by AbsorbedSpoon3 July 5, 2019

Getting fucked while your balls are vibrating from the wavelengths of Knuckle Puck’s live performance.
by TaraWard10 November 21, 2023

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.
by Gizard XD February 28, 2017

What a fuck-knuckle.
by #CoronaTime_420_69_51 March 24, 2020
