Knuckle punch 

A punch with raised middle finger knuckle.

"Stop knuckle punching your brother"

Knuckle punch by Specialized September 16, 2021

Knuckle Punch 

A knuckle punch is when two fists collide in a totally ungay way. Its a proper word for what some GAYS call 'fist bump'.
Cause obviously bumping fists makes no sense.
KNUCKLE PUNCH ALL THE WAY.

Sarah - OH EM JEE DO YOU WANT TO BUMP FISTS?

Me- No. But I'm willing to do a knuckle punch with that sexy boy toy of yours.

Knuckle Punch by Awesome-awesomatron October 14, 2010

Two-Knuckle Punch 

Proceded to make a fist with two knuckles protruding. Then strike object with said protruding knuckles.

Drew insulted me. So I gave him a "Two-Knuckle Punch" straight to the urethra.

Two-Knuckle Punch by Mark Twain Gay Nephew January 20, 2020

chili knuckle punch 

the act of rubbing your knuckles up and down the palm of your hand until there right hot, then punch someone on there arm while holding your knuckles there for 3 seconds, they get punched and burnt at the same time!!!

person1: that chris was annoying me so i gave him a chili knuckle punch
person2: i bet he was in pain
person1: hell yeah he was screaming in pain
person2: lol

chili knuckle punch by DJ SPYKERZ(SCOUSED OUT) July 6, 2009

three knuckle punch 

a digital rectal exam

I just went to my doctor and got the three knuckle punch!

three knuckle punch by bobby the assclown May 13, 2005

Punching the Knuckle Clock 

When you pass up a night of fun with friends and family to sit around alone at your place with porn and masturbate over and over again. During this time you wonder periodically between sessions if you made the write choice. This will often start to seem like work, but since you already passed on the fun you might as well do a good job of punching the knuckle clock...

The whole place stank of jizz and loneliness. A tear ran softly down my cheek as i continued punching the knuckle clock..

Punching the Knuckle Clock by Thedude78 September 4, 2012