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!"
A term commonly used when describing CT Side Saddle.
It is an optical illusion when you insert your thumb knuckle deep inside a girl's ass. Your knuckle will seem to disappear!
?: "Where'd it go?"
CT: "There it is!"
?: "Where'd it go?"
CT: "There it is! The disappearing knuckle!"
The process of giving a knuckle-bump over the internet.
Kid watching Youtube video of a kid doing a cool stunt: Dude that's fucking awesome! This kid gets some Internet Knuckles.
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.
To get belligerently drunk, to the point of blacking out and making choices you may regret
Anyone want to go get knuckled up at Applebee’s with me?
To fist a girl while she is on her period.
Oh man, my girlfriend was on her period so I gave her a bloody knuckle.
When stupid drunk AZN's fall off their bunk beds.
Blanket knuckle dimed after getting party boyed.