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
Get the Knuckle Fuck mug.by elcapitandeganja October 18, 2013
Get the Fuck Knuckle mug.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.
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
Get the Fuck Knuckle mug.(FUCK KNUCKLES) slang expression used to describe something unexpected, usually in a loud manner.****** It was just submitted and was just submitted and accepted but my phone dropped the lettet K, so it apoeared as Fuck Knucles. So sorry about that********
by Tabago's mom March 30, 2019
Get the Fuck Knuckles mug.by Marty's ass September 25, 2020
Get the Fuck-knuckle mug.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
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