A pre shit fart, is the last bit of gas left over, which takes over the remaining space between your rectum , your poop and the air. It is the worst smelling fart ever, smells like you have shit your sefl, without actually shitting yourself. It is your last and final warning to get your butt to the toilet!
I have been busting ass all the way home, but this last one was a real pre shit fart.

It is the last amount before you are actually praire dogging. A preshit fart is allowing your company to actally smell the authenticity of what your shit would smell like if they were hagging out in the bathroom with you. Mostly, smells like a trucker shit.

Angel just threw a pre-shit fart and then dashed to the bathroom.....almost missing the bowl
by Fartologist December 22, 2013
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The part of you butt (your cossey)that lets farts leave and keeps the shit in your ass.
Schmits shit fart seperator didn't work so when he shat he had to shcmit because he got poo on his chode hairs
by concrete lab August 24, 2008
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A fart that is comparable to a fresh pile that a dog has just pushed out. Usually a fowel smell that has the potential to clear a large room of people. Not to be confused with a normal smelly fart. Dog shit farts make the farter want to itch his sphincter after release similar to a dog trying to wipe it's ass using the rug or carpet. This term is also known as a DSF.
"Mike had ruined my dinner because he had a dog shit fart in the kitchen"
by CPal21 September 14, 2011
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The shit-fart separator (AKA shitfart separator) is the muscle inside your colon, just above your bunghole, that is responsible for separating shits from farts. Usually a dormant muscle, the shit-fart separator is often only noticed if it's repeatedly squeezing and churning when one has diarrhea. The work of a healthy shit-fart separator usually results in dry farts.

I had bad diarrhea, and my shit-fart separator was in overdrive.

My shit-fart separator failed me and I accidentally sharted a little in my underwear.
by Flambo Blumpkin February 14, 2008
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AKA SFS The shit fart separator is the divice inside your ass that separates your shit from your farts. Without this divice everything turns into a shart.
Dude are you trying to fart.
No man im testing my shit fart separator.
by RedlegArtillerymen August 21, 2008
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Self exlanatory. Happens to the best of us
Hey ! Go to the bathroom. You've been farting around a shit all morning.
by Rob dog wolfe January 28, 2017
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when someone calls you a "diarrhea emoji" on Twitch you reply by calling them a poopy shit fart.
Person 1 in chat: "hey diarrhea emoji."
Twitch streamer: "what up you poopy shit fart"
by hottdog November 19, 2021
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