Flow so nice you ain't gotta put a rug on her

from Lil Wayne (Ft. Drake) – Right Above It Lyrics on Rap Genius

The word “flow” is being bent here to also sound like “floor”. Rugs are decorative items used to make your floor look better, but Wayne’s “flow/floor” already looks great

Also another underlying Wayne-esque menstruation reference which follows on from the previous line, specifically the “blood donor” bit; her flow (period) is so nice there’s no need to rug up that pussy, just donate it to Wayne and, uh.. let it flo'

Wayne sure loves his pussy bleeding

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