Whistelin' Past The Graveyard
A fart of unusual pungency cause by forcing it through a full colon. In essence, farting around a turd.
Everyone in the elevator couldn't help but notice the foul aroma emanating from around Lenny's general area. Only Bob was brave enough to say what had to be said, "DAMN Len! You Whistelin' Past The Graveyard? Go take a shit, man!"