In that red Budweiser hat, who but me?

from Das Racist (Ft. El-P) – Shut Up, Man Lyrics on Rap Genius

Meaning

Das Racist participated in an interview on “The Interview Show” hosted by Mark Bazer at Union Hall, where Heems wore a Red Budweiser hat during that interview.

http://www.youtube.com/watch?v=jVsgDnKMWmA

Also a reference to this:
http://rapgenius.com/487187

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