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
A single rock of Crack cocaine, not large enough to be a “crack cookie”
Hey bud, I see a parakeet knuckle under the floor mat!
Sounds like butt stuff
Girlfriend: whatcha wanna do tonight ?
Boyfriend let's do a knuckle muffin
Girlfriend: eww sounds like butt stuff .. IM IN!!!