Throat Knuckle 

another name for an "Adam's Apple"

"Im gonna stab him in the throat knuckle!"

Throat Knuckle by The Throat Knuckler January 2, 2010

Poo-knuckle Hole-jacker 

A long piece of soft cloth (about 3ft or 100cm) with four or five knots tied at even intervals along it. .... is placed between the legs and the ends held in each hand, one in front and one behind, as if being straddled (usually with your clothes still on).
To use: The rear hand is lowered as the front hand is lifted and vice versa. Repeat this action; causing the Pooknuckle Holejacker to move between your legs, while the knots are bumping you.

This may or may not be a good thing.

Therefore, this word may be used to describe a bumpy ride, a rough person or a really horny person.

Person 1: Hey - have you seen my Poo-knuckle Hole-jacker
Person 2: Yeah, you left it on the bathroom floor.
Person 1: Oh, thanks .. .. .. .. You didn't use it did you?
Person 2: No way! I have my own Pooknuckle Holejacker.

or:
OMG that road was so bumpy! I wont be needing my Pooknuckle Holejacker tonight!

or:
That guy is a roughbastard, what a Pooknuckle Holejacker!

or:
My boyfriend is so horny! He's like a Pooknuckle Holejacker on steriods. Yay!

Poo-knuckle Hole-jacker by ozelement October 18, 2010

Velvet Knuckle 

An extremely aroused, engorged clitoris.

With the aid of a few fellow Chaturbaters, She diddled her velvet knuckle till she squirted for her horny followers.

Velvet Knuckle by Eaton Holgoode March 2, 2017

5 Knuckle Shuffle 

to perform the act of masturbation ie a wank

after watching 'zoey 101', mike went into the bathroom for a quick 5 knuckle shuffle

5 Knuckle Shuffle by big bobs basterd beans December 28, 2005

white knuckle shuffle 

The act of running to the bathroom or wherever the tissues are with your pants around your ankles after masturbating.

Should have had the paper towels close by before you started, oh well.

Should have had the paper towels close by before I started, oh well I'll just have to do the white knuckle shuffle afterward.

white knuckle shuffle by angry Dick April 15, 2011

Kunker Knuckle 

A large woman's camel toe. Can also be used to describe someone who is being a general fuckwit

Hey man stop talking shit your being a gaping kunker knuckle

Kunker Knuckle by DA_TURNIP July 2, 2014

Sink a Knuckle 

To finger a girl, especially in a public setting like a movie.

The male equivalent of giving a handjob.

I've only been out with this chick twice, and she already let me sink a knuckle!

Sink a Knuckle by ImTheMayor June 28, 2010