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!

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)

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

Fuck Knuckle by ThiccyBoii March 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.

Five Knuckle Shuffle by foil7 September 3, 2015

Five Knuckle Shuffle 

Another word for the popular slang word 'wank'.
Most commonly used in pub-talks between men of age 18-30 to describe masturbation in a funny way, normally about someone, rather than themselves.

"I hear Dan's enjoying the five knuckle shuffle right now"

Five Knuckle Shuffle by DanielleInIpswich May 27, 2006

Knucklehead 

A nickname associated with fans of the heavy metal band Five Finger Death Punch.

Judging by his 5FDP shirt, he must be a Knucklehead.

Knucklehead by Tank238 October 15, 2012

knucklefuck 

One who combines the attributes of a knucklehead and a fucker.

What the hell! Are you some kinda knucklefuck?

knucklefuck by David Nygaard January 30, 2005