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.
A trashy placed tattoo that could be a lot more original
Did you see his knuckle tats? How distasteful
When a guy jerks off and it just dribbles down his knuckles instesd of shooting off towards the sky
Dude your nothing but a knuckle blower .
When a b**** try to bust your nuts
The best. She bust me so she's trying to crunch knuckle me
When you reach down to grab something off cement and you drag your knuckles on the ground creating a jagged scrape called a "flutter"
Scott: "Oh look a penny!"
David: "Grab it"
Scott: "Fuck! I got a flutter knuckle."
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Term used to describe a male that has just fingered a female.
Ken: Hey buddy, whatchya been doin?
Chris: Just got done fingering Ashley.
Ken: I thought you had some slippery knuckles.
A sexual act between two fisting hot lesbian Cuban which involves 5 cigars and Fidel Castro
Bro have you seen that video where those two girls give each other Cuban Knuckles .... Its hot ASF