Top Definition
The tightest man ever lived. The boss of all bosses.

Origin: Short for Bran Muffin. Term invented by Brown Rice.
Brown Rice: "duuuu what should we do tonight??"

Andrew: "how bout lets go hang out with someone uber tightt?"

Brown Rice: "whoo??"

Both: "B MUFF!"
by Kung Powzzzz July 19, 2009

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