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1.
When you fart around the turd that is locked and loaded in your colon. Typically lingers for several minutes.
Tommy dropped some shit mist in science lab today. My glasses fogged up and the chick next to me threw up.
by mark c73 January 21, 2008
 
2.
A fart that is so overwhelmingly pungent it makes the air dense with stench particles.
person 1: "Did you fart?" person 2: "Why?"
person 1: "I think i need a gas mask, i could cut the air like cake!!!"
person 2: "Ha ha ha... shit mist!"
by words by Paul June 19, 2011