When one fists another individual in their raunchy snatch after taking a fresh Cosby drop off, the knuckles come out looking as if fudge was splattered on them.
Bill: "Bro did you smash?"
Evan: "Even better. After she came out of the bathroom, she gave me fudge knuckles dude!"
The exact spot on the shaft of a crooked penis where it changes direction.
Crooked-dicked JimBob could make Tammy Sue cum everytime because his Hog Knuckle hit her G-spot just right.
After someone has fisted another person, they leave their hand uncleaned for a while. The fluids, dry and harden on the hand, forming a Crusty Knuckle, or Crusty Knuckles depending on the severity.
Jasmin fisted Leeroy. She left her hand overnight an the shit hardened. In the morning her hand had turned into a Crusty Knuckle.
A particularly large irritating haemorrhoid.
the steak Geoff had the night before created such difficulty pushing the poo out that it created a real bum knuckle.
When you shave your head bald. slap butter in your unshaved ass, go down on a hairy female that smells like cigarette smoke and wet bus seats and go to town!!!
Dude I’m gonna get so drunk and bush knuckle Kelsey tonight.
The act of pleasuring yourself by repeatedly punching yourself in the cock.
You're a knuckle wanker.