Courtesy Knuckles

When a male continuously strokes the clitoris of a female vagina with his knuckles, while at the same time he masturbates.

Last night me and my boyfriend had sex at the montage. As he pulled out he began to masturbate and give me courtesy knuckles. It was a blast!

by Mr.ALegend February 26, 2011

Taint Knuckler

An act where at the peak of an orgasm, the initiator of the orgasm, uses the 2nd knuckle of the middle finger( of the hand of thier choice) to rub the taint of the other person (or sometimes thier own taint) in a counter-clockwise circle, thus increasing the pleasure sensation immeasurably !

I would have gotten rid of her years ago but... she is the best Taint Knuckler I know. I would have gone out with Maggie Q but with such small hands her Taint Knuckling would leave me wanting so much more!

by The Dirty Geek March 3, 2011

Ass-knuckle

Someone who is clueless or stupid.

"Dude the new guy is such a dumbass!

"for real, he's a total friggin' ass-knuckle!

by Skin bone June 21, 2011

five knuckle sandwich

When a guy sticks his fist in the girls mouth and then gives her anal

When Lenny and Caroline go at it(five knuckle sandwich)

by Niggermcblackass May 31, 2014

Fuck Knuckle

A person who is equally a fuck head and who you want to plant your nuckel in.

Friend: Who's he
Me: Oh he's just some fuck knuckle
Friend: Wow what an idiot

by ThiccyBoii March 20, 2017

Holy Fuck Knuckles

When you see something so excessive, amazing, horrifying, fortuitous, or otherwise awesome, that you are bereft of any other words to say.

Scott: "That guy just walked out the flaming wreckage after a car accident!"
Bob: "Holy fuck knuckles! He is still walking!"

by pokettomonsuta November 20, 2017

Five Knuckle Shuffle

A wrestling move of WWE Wrestler John Cena where he pounds his knuckles onto his opponent's face.

John Cena's going for a five Knuckle Shuffle on Big Show.

by foil7 September 3, 2015