Disappearing Knuckle

A term commonly used when describing CT Side Saddle.
It is an optical illusion when you insert your thumb knuckle deep inside a girl's ass. Your knuckle will seem to disappear!

?: "Where'd it go?"
CT: "There it is!"
?: "Where'd it go?"
CT: "There it is! The disappearing knuckle!"

by Speed Racer 19 April 25, 2010

Fuck Knuckles

How you say you want to bang and fuck your shit up at the same time.

Bitch, I wanna give you some good ole fashioned fuck knuckles.

by 1oftheBOYS February 12, 2021

narragansett knuckle

The sexual act when a partner takes a clam shell, inserts one half into the vagina and the other half into the anus. Once inserted, the clam holder must go knuckle deep in both vagina and anus and make the clam shells meet to make a clapping sound.

Aye, she was a salty sea hag, so it was customary to give her the ol' narragansett knuckle!

by ae86guyisbored April 20, 2019

knuckle rule

the rule which state that you are able to date someone 2 years older or younger (2 knuckles from the middle both ways) without consiquence

Dude1: yo last night i hooked up with this hot chick from collage
Dude2: u mean the blonde one? shes 2 years older then you!
Dude1: knuckle rule
Dude2:good point, nice job last night

by Jesse Mitchell January 12, 2008

Fudge knuckles

When you go to wipe and your hand slips and you get last nights digested leftover all over your knuckles.

I was wiping the other day and my hand sliped and I got fudge knuckles.

by Garebear#1 September 22, 2014

chum knuckle

1. An idiot or moron
2. Someone who is clumsy.

Did you hear what she said? She is such a chum knuckle!

by XTO June 20, 2010

knuckle chucks

1. Noun. The male ejaculate by way of manual masterbation.
2.Noun. Derogatory name give to person in place of "jerk offs." Commonly used in military environments where swearing or more conventional insults are discouraged.

"Listen here you little knuckle chucks. You best not be messing things up!"

by Makinnak January 13, 2017