Knucklehead 

The act of shallowly fisting while simultaneously fellating one's partner.

The new guy at the Rainbow Room gives mind-blowing "knucklehead".

Knucklehead by 6fireguys November 16, 2013

knucklez 

The Worlds Coolest guy ever!
Both In Sonic AND Jedi Knight 2/3

Knucklez da COOOL guyyyy!

knucklez by KnuX :D March 2, 2004

five knuckle gusset shuffle 

A phrase meaning to masturbate. Male masturbation.

The other night, I was alone, so i had to rely on the good old five knuckle gusset shuffle

five knuckle gusset shuffle by SherbShizzle October 16, 2008

Mud Knuckle 

The Anus

Your Mud Knuckle smells.

Mud Knuckle by Gulies January 25, 2009

Camel Knuckle 

Man's version of a Camel Toe.

Hey, look at dude in the speedo.....Wow hes got some nasty camel knuckle!

Camel Knuckle by Renee87 September 27, 2011

Moose Knuckle 

Much like a camel toe only much larger. Occurs when the front seam on a womans pants get lost in her crotch. Her puddy is split in half.

Damn, look at the moose knuckle on the 300 pounder. Spandex should be outlawed on any chick over 150.

Moose Knuckle by Doug Denny December 28, 2005

Knuckle Dick 

Someone being a complete dumb ass. Not brite. Says repeated dumb remarks.

Dude why did Bob stick his dick in the fuel tank? Hes a complete knuckle dick.

Knuckle Dick by rail-a-bitch February 8, 2009