Top Definition
1) A silent but deadly (SBD) fart that is so horrific in smell that it will peel paint off the walls.

2) A whale of a fart that has a powerful and poignant stench.

Pronounced Boo-Lee
"Icki dropped ass and tilted the stench meter to the Boulley setting."

"Scotty-Bob barked out a dead chipmonk boulley and cleared the room of humans and insects".
by Mr. Doobie May 21, 2008
5 Words related to boulley

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