Santa ain't real - let alone is he black
Catch him coming down my chimney and the Mac'll go Vrack!

from Beanie Sigel – What You Talkin Bout? (I Ain't Ya Average Cat) Lyrics on Rap Genius

Meaning

Beanie turns Jay-Z’s line in a violent direction: he’ll shoot Santa Claus with his Mac-10 if Santa comes into Beanie’s home

Of course, since Jay-Z said everybody confuses him with Santa Claus, even though Sigel is denying that Jay-Z is Santa Claus, the threat of shooting Santa is still a veiled threat at Jay

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