But if you gon' tell me that A&W ain't the spot for the best hot dogs
You can get the “F” on dawg

from T.I. (Ft. Eminem) – That's All She Wrote (Alternate Eminem Verse) Lyrics on Rap Genius

Meaning

If you (an unidentified person) aren’t going to agree that A&W is the best hot dog joint, there is no point in disputing with you.

A&W owns a chain of slaughterhouse restaurants very much like aftermath records, a record label that owns a chain of rappers. By this comparison, Eminem is saying: if you can’t agree that I’m the best rapper then get the fuck on, dog.

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