knuckle-up 

An action akin to the high-five or the handshake. The act of touching fists knukle-to-knuckle in greeting or departure. In 2003 this action was accompanied by the phrase "knuckle-up" but has since just become the motion without the phrase. The first instance of this action and phrase was in Dallas, TX in the mid-90's and has since become a common gesture in most public forms of transit in NYC.

Jimbo-- "Is that some kind of a gang sign?"
Miguel--"Nah, that's a knuckle-up, bro."

knuckle-up by super steve September 11, 2005

knuckle dunking 

Not to be confused with finger fucking , knuckle dunking is abit more gentle and must be done an hour or less after dunking powered mini donuts in milk.

Was knuckle dunking for so long my wrist hurts dnd now I have no more mini doughnuts and milk

knuckle dunking by BSR710 March 6, 2018

knuckle dragger 

A mechanic or engineer who frequently uses hand tools that require rubbing there hands against objects .

man 1 : hey man is your car fixed yet ?

man 2 : nah , man . those Knuckle draggers are taking all week .

knuckle dragger by MassDemo August 1, 2012

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

knuckle rule by Jesse Mitchell January 12, 2008

knuckle muncher 

when someones hand gets so far up someones pussy

Sebastian:my fingers got well far up your pussy when i was fingering you betty

betty: i know my pussy must be a knuckle muncher

knuckle muncher by toe licker August 17, 2010

Knuckle dick 

A penis that has "popped" or made a popping sound similar to knuckles popping after being thrusted in too hard, resulting in a bent penis and pain

Dude the other night I was with my girl and went too hard and got a knuckle dick.

Knuckle dick by Dr. F the mad scientist December 22, 2015

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!"

knuckle chucks by Makinnak January 13, 2017