If I fuck her on the floor I can call it shag carpeting (get it?)

from T-Pain (Ft. Tay Dizm) – Mr. Downtown Lyrics on Rap Genius

T-Pain, don’t you know that you’re not supposed to explain the joke?

Regardless, shag is any textile with a high pile count (piles are upright loops/twists of fabric), and “shag” is British slang for sex. The writhing bodies of T-Pain + his girl would then form a “shag carpet” over the floor — even better if said floor was already covered in an actual shag carpet.

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