50 Cent Italian, icy flow
This is a double entendre.
Rapper 50 Cent is from the same neighborhood as Nicki in NYC so while Nicki is rapping about the hood she’s from she compares her flow to another famous rapper from her neighborhood.
Also Italian Ice is usually sold for 50 Cent on Ice Cream trucks, stands, etc.
So she compares her flow to 50 Cent & Italian Ice while referencing the hood she was raised in.
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