knuckle butter

Noun, the slimy substance that seeps out from between the fingers of a closed fist after a person has ejaculated in their own hand.

Jack used a tissue to wipe the knuckle butter off of his hand after he jacked off.

by Bentrok May 9, 2006

Knuckle-Butter

The peanut butter that ends up on your knuckles when your knife/spoon is shorter than the jar.

This tiny plastic knife is no match against that big ass jar of Jiff. Got me covered in the knuckle-butter...

by Grandmaster Dave November 27, 2017

knuckle butter

When you fist a girls asshole then switch to her pussy and the butt/pussy juices mix to create a tan frothy cream.

"After I fisted my girls butt i switched to da pussy, my wrist was drippin with knuckle butter son!"

by IAbmx May 12, 2015

bustin' butt knuckles

The consensual act of having aggressive anal sex with someone who has horrific hemorrhoids in order to break them down

Angie knew when she had got hemorrhoids again it was time for Peter to start bustin' butt knuckles to get some relief

by von groovy April 11, 2019

Butt-knuckler

A straight male that enjoys a finger in his butt during sexual intercourse.

I hear Garrett is a butt-knuckler.

by Manny Weatherton April 25, 2021

Butt Knucle Sandwich

A Butt Knucle Sandwich is a situation in chess where two opposing knights are both behind the other and facing away from each other.

"Our chess game ended in a stalemate because we kept getting Butt Knucle Sandwiched."

by Itain'tObeeezy January 25, 2025

peanut butter knuckle fuck

When another person, or animal, licks peanut butter off your balls while you jerk off.

Man, my girl gave me a peanut butter knuckle fuck last night.

by Britt Charnock March 6, 2017