At night, New York, eat a slice too hot
Use my tongue to tear the skin hanging from the roof of my mouth
New York is famous for its pizza that is hot and cheesy.
Also, this could be a reference to his song, Represent from Illmatic:
This nigga raps with a razor, keep it under my tongue.
Were Nas to have a razor under his tongue, it could be used to “tear the skin hanging from the top of his mouth”. As in to say he raps in a sharp/intelligent manner.
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