Y'all about the champagne, I'm about the toast,

from Royce Da 5'9" (Ft. Eminem) – Writer's Block Lyrics on Rap Genius

Meaning

Other rappers just blow cash, and party. Royce is about making deals (as signified by toasting glasses) and getting money (toast = bread).
Also he could be saying y'all are like champagne just starting shit popping off at the mouth and he is about finishing it with the toast(gun). Burning that motherfucker.

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