Kid, you oughta start reachin' for that nickle-plated auto-
Matic (f'real)

from Method Man – Sub Crazy Lyrics on Rap Genius

Meaning

Meth is warning you to reach for your gun because you’re going to need it in a minute. If you’re too slow, that’s your ass.

http://www.youtube.com/watch?v=FQ6kMWA2WRk

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