Homie you think you tough (what)
Think we won't fuck you up (punk)
Even the innocent get pistol-whipped by this pistol grip (punk)
Talkin' shit you drunk (what)
Think I won't fuck you up (punk)
We both deep, I ain't scared and I don't give a fuck (jump)

from Proof (Ft. Eminem) – Oil Can Harry Lyrics on Rap Genius

Meaning

Proof warning all the haters.

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