1 definition by Kermitp
When your fart is so dense you can almost feel, smell, and taste it in the are. Its like a light rain (mist) in a humid climate, however the weather is from your butt.
Guy1: Damnit, what is that? its like i walked into a stinky cloud!
Guy2: HAHA, you just walked into poo mist.
Guy2: HAHA, you just walked into poo mist.
by Kermitp October 23, 2015