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

butt knuckle

(noun) The popping sound made by an explosive fart. A crisp and short passage of gas from ones butt.

Excuse me while I crack my butt knuckle.

by Jay Hoe September 7, 2009

Four Knuckle Shuffle

Another word for jacking off

Corey did the four knuckle shuffle while thinking about April.

by Casey April 28, 2003

knuckle head

Someone who has just made a mistake or done something wrong. Often used in a joking manner between friends.

After arriving at the ski resort Pat discovered that he had forgot his skis to which his friends responded "Pat, you're a knuckle head!".

by zantern July 2, 2005

knuckle tap

Commonly referred to as dap, a fist on fist greeting traditionally given as a sign of respect. However, "knuckle tap" is most often used amongst Caucasians.

Daniel: "I played a superb match of polo the other day, and I received several knuckle taps!"

by Satch MD December 18, 2007

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.

by Sean Piner October 1, 2006

knuckle butt

To slip one's knuckle into the crack of an unsuspecting victim. Similar to a credit card but using the knuckle.

When Sally bent down to pick up her shoes, Bryan reach over and gave her the 'ole knuckle butt.

by akellz September 19, 2012