Been on my grind since early '99
Or was it late '98? Fuck it, either way it's my time

from Slaughterhouse – DJ Green Lantern "D.O.A." Freestyle Part 2 Lyrics on Rap Genius

Meaning

Though Joell first came to public notice with his March 2004 appearance in The Source magazine’s “Unsigned Hype” column, he has bee rapping far longer than that

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