1. Mustache/beard. More directly, a mustache/beard on a well skilled man at the art of muffin dusting.

2. Oral master concerning the art of female climax. Usually entails a well trained embouchure and tonguing techniques.
Chick #1:Did you see the muffin duster on that guy?

Chick #2:Yeah.. all of the other flavor savors must be jealous as hell!

by Nefarious Aflatus December 24, 2008
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