Drum Major

The last fart let before the person decides to go take a crap. The Drum Major is so named, because it leads the parade of feces out of the colon, as a Drum Major would lead the band in a parade down the street.
Innocent bystander: "Man, that fart smelled TERRIBLE! Was that you?"

Guilty party: "Yeah, that was the Drum Major. Guess I'll go take a crap."
by PilotBoboe January 16, 2009
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