Definitions by Friendly Niggerhood Spiderman

Jag 

A verb to be used when one means serious business, and wishes to express their anger. Can mean to hurt, burn, kill, or basically just fuck the person up.

John: You know steve, you're kind of a tool
Steve: Shut up before I jag you.

Jag by Friendly Niggerhood Spiderman February 9, 2014