tug knuckle

the highest knuckle on your hand while masterbating.....
the second joint of your thumb while making a fist ..
the same would be implied for females using artificial stimuly {viberator}

i keep banging my tug knuckle on the table
my tug knuckle is sore
you're such a tug knuckle ! ! ! !

Jungle Knuckle

A noun used to determine if a white person is racist

'Hey, do you know what a jungle knuckle is?'
'Does it have to do with black people?'

shin knuckle

A person's ankle

I sprained my shin knuckle playing ball.

gas knuckle

When your balls get divided by the mid seam of your underwear.

My dad started to cry in church, said he had a bitchin gas knuckle

Gimme knuckles

Another way to say fist bump

Imagine 2 people playing Darts for the same team of 4 players. One team mate scores 180 points with 3 Darts (taking the game, because their team needed to score 180 points to win the game)

Player 1: Holy Crap, 180!!
Teammate: Dude, gimme knuckles!!!
The winning team's 4 members all bump fists.

knuckle valley

The space on your hand between your knuckles. Ben White invented this term.

I have a wart in my knuckle valley.

Double moose knuckle

An extra fat pussy

Damn look at tyreesha’s double moose knuckle , it could swallow a house