Slang for masturbation when trying to discreetly but openly talk about masturbation.
Past tense: shook the knuckles
Past tense: shook the knuckles
by vladmiric acid August 17, 2010

Knuckle Joe, Probably known as Joey, or Joesph.
(A) Knuckle Joe would be a common Fighter, Using such moves as, Risen Break, Smash Punch, Bulken Jab, Spin Kick, and more..
Knuckle Joe would be described as a short elf with a large temper. A different side though to a fighter would be that Joe has a large Heart that beats for his burning desire, not a Romantic but sure can impress the ladies with looks, charm, and smile. Knuckle Joe, with the blonde stiff locks and fiery temper can be VERY Obnoxious but he can be easy to live with, or be along side with, once you get to his good side, he could be the sweetest most loyal, Kid/Teen to be around, Joe does not start off shy, that's for sure.!~
(A) Knuckle Joe would be a common Fighter, Using such moves as, Risen Break, Smash Punch, Bulken Jab, Spin Kick, and more..
Knuckle Joe would be described as a short elf with a large temper. A different side though to a fighter would be that Joe has a large Heart that beats for his burning desire, not a Romantic but sure can impress the ladies with looks, charm, and smile. Knuckle Joe, with the blonde stiff locks and fiery temper can be VERY Obnoxious but he can be easy to live with, or be along side with, once you get to his good side, he could be the sweetest most loyal, Kid/Teen to be around, Joe does not start off shy, that's for sure.!~
Knuckle JoeBlondeCuteElfTemperFunnyStrong
by Sammiiie July 24, 2012

by Charlie67 September 21, 2013

When you give yourself a hearty wank and bust a load all down your hand and fingers and fail to clean up the nut adequately leaving crusty jizz on the knuckles.
You might want to put a little hand lotion on your digits there braaaaaahhh. Skin looks a little dry and flakey. Naaaaaahhhh brooooohhhb that’s just knuckle chum. I didn’t wash my hand earlier after I gave it a good wank.
by Eaton Holgoode May 30, 2018

by Oh Shit February 8, 2008

The feeling one gets on their knuckles when reaching between a stripper's legs to put money in her thong and her pussy has a 5 o'clock shadow and it scrapes against your knuckles.
by Chaumbra March 22, 2016

the very center of a persons' abs (more common when it's a 4 pack) that is harder than the rest of that abs, and tightens similar to a knuckle. It hurts when hit directly, similar to the pain of playing bloody knuckles.
(out of stupidity) I'm going to break your tummy knuckle!
My tummy knuckle hurts after doing so many crunches.
My tummy knuckle hurts after doing so many crunches.
by Aaron Moe Scott March 31, 2010
