I'mma aim sloppy at a loud mouth, discharge
Dismiss any business of yours

from Kendrick Lamar (Ft. Gunplay) – Cartoon & Cereal Lyrics on Rap Genius

Meaning

Kendrick is gonna unload a whole clip on a loudmouth (a shit talker/rat) and keep him from spewing garbage no one cares about. .

He could also be continuing from the line before, letting them know that he’ll piss in the mouths of shit talkers just to shut them up. .

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