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 knuckles by kickback14 January 30, 2014

Throw your knuckles around 

Means come and fight

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

Throw your knuckles around by VN5 January 18, 2017

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 It Some Knuckle by FertDeDoosh August 3, 2017