throw knuckles

to street fight, throw hands, box, or brawl.

Dam my hand hurts...we'll that's what happens when you throw knuckles!

Throw It Some Knuckle

To masturbate to something.

Student 1: Man, our English teacher is so hot!
Student 2: Yeah did you see her new profile picture?

Student 1: Yeah man, I'm gonna throw it some knuckle tonight.

Throw your knuckles around

Means come and fight

I heard you were talking trash come throw your knuckles around!!