Four Knuckle Shuffle 

Another word for jacking off

Corey did the four knuckle shuffle while thinking about April.

Four Knuckle Shuffle by Casey April 28, 2003

ass knuckle 

The growth of an inflammed, festered, and bloody hemorrhoid that creates a groove-like affect in your feces.

Dave, don't do it. Jeff has an ass knuckle, that's not going to be fun.

ass knuckle by Sean Piner October 1, 2006

Fuck knuckle 

An idiot, a dumb person.

Wow jones was a fuck knuckle to jump off that roof!

Fuck knuckle by Hayden The Sexy April 14, 2006

Five knuckle shuffle 

Slang (Geordie, Newcastle)

Masturbation: The phrase comes from the act of masturbating using the whole hand, wrapping 4 fingers round the shaft of the penis, and the thumb round the other side, hence "five knuckles".

Geordie 1: Howaye man. Did ye score last night?
Geordie 2: Ney chance. I was gannin' the Five knuckle shuffle till it felt like me hand'd fall off.

Five knuckle shuffle by Eddie Faulkner May 22, 2008

holy fuck knuckle 

An exclamation of awe.

Whoo-boy, yes sir, quite the riveting tale of rebellion and adventure indeed. I was on the edge of my goddamn seat I tell you what. That was some amazingly hot shit indeed, holy fuck knuckle son, I think I felt my dick move. You are clearly the greatest, baddest mother fucker to walk God's green Earth in the history of man. Four times you drove by with that horn? I am in goddamn awe. AWE I TELL YOU. Inspiring shit indeed, yes sir, there can be no question, you have really made a difference.

holy fuck knuckle by beNZylpiperazine August 7, 2007

Toe knuckle 

The knuckle part of your toe - we don’t need no fancy word for it.

He just hit me with his toe knuckle

Toe knuckle by Lphill January 20, 2019

buffalo knuckle

The male version of camel toe.

Dude, his buffalo knuckle is too much for me to bare!

buffalo knuckle by andersonland.org November 15, 2004