fart dust 

fart dust is microscopic and/or visible bits of feces expelled from the rectum. Feces accumulates on the sphincter after wiping the buttocks because of the wrinkles of the sphincter. Feces dries and when a person farts/expells gas the sphincter opens slightly and the wrinkles open and allow the dried feces to fall and be blown out. Dr. Chuck of The Virginia Fecal Institute performed many experiments to prove the existence of fart dust despite many disbelievers but proved without a shadow of a doubt that it in fact existed. With the help of a "volunteer", he had the test subject fart on a clean sheet of printer paper and the fart dust materialized. Fart dust does not occur with peoples who use baby wipes or bidets for cleansing their buttocks after bathroom use.

Joe awoke hacking up fart dust after Harold farted in his open mouth.

fart dust by Charles Golay February 21, 2009

Fart Dust 

The Dust that flies when you slap a couch cushion, padded chair, or any other soft surface where people sit.

I was laughing so hard that I slapped the couch, got a whiff of fart dust, then almost passed out.

Fart Dust by pghpanthers2 October 27, 2008

Fart Dust 

The rank smell that erupts when someone sits in a chair you recently blasted into.

Dude, someone left some freakin fart dust in my chair!

Fart Dust by gyrussfanx May 23, 2007

Fart Dust 

The microscopic feces particals expelled out of the rectum within the methane gases of flatulation.

The seat fabric had accumulated nearly visable fart dust from its experience since being manufactured in 1951.

Fart Dust by Ashton Lee September 22, 2003

Fart Dust 

The dusting on the water of the toilet when you fart after a long diaharia.

Somebody please flush that fart dust down the toilet

Fart Dust by showty22 April 10, 2003

Fart Dust 

A really dry flatulence which upon exiting the anus emits dust which then can be seen on the inner lining of the undergarment as a powder like substance which falls away upon removal of said undergarment.

Hey Bill, check out my collection of fart dust I have here in this jar. It weighs almost 10 pounds!

Fart Dust by Auron117 September 11, 2015

Fart Dust 

When you have to shit, but only a fart come's spraying out yo bootyhole.

I just had to run to the bathroom, only to fucking fart dust.

Fart Dust by Impala_067 February 16, 2021