Jamaica Avenue! That's where I'm at! Where you at?
Yo, that's where I'm at? Where you at?
At the most literal level, Kool AD is telling Hima he has arrived at the storefront. Both Hima and Victor (Kool AD) have talked at length in interviews such as this one with Sepia Mutiny about how rappers handle the issue of class… perhaps this line is meant to suggest Hima’s self-identification with Queens (Victor is from San Francisco)
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