Everytime I be hittin y'all niggas with shit
That be makin y'all niggas really wanna black up in the fucking spot

from Busta Rhymes (Ft. Lenny Kravitz) – Make Noise Lyrics on Rap Genius

Meaning

Blackup — A group of black friends that, although they never hang out with you, will instantly have your back if you get into a fight.

Every time Busta drops a record, haters need blackup right on the spot.

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