I keep this shit 3hunna bitch, I'm going right
With my niggas when it's time to start taking lifes

from Chief Keef (Ft. Lil Reese) – I Don't Like Lyrics on Rap Genius

Meaning

He could be also referring to his gang affiliation. 300 refers to Black Disciples and “I’m going right” could possibly mean he is flagging to the right (gang flag is inside his back right pocket.

He’s also not a poser; if there’s a shooting to be had, Keef will be in the thick of it.

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