Ass Reflex 

Is similar to the case known as "Acid Reflex" except only affects the rectal region. Also refer to "Shart" or "Mud Butt". It's not quite a fart, but not quite a shit either. A warm and excessively moist passing of gass/poop liquid.

After eating Chow Mein at Coleton's Shit Shack, I had contracted a bad case of Ass Reflex. The sensation was quite unpleasant, smelly, warm, and even spicy!

Ass Reflex by Ass Reflex January 26, 2017

The Ass Reflex Test

A test that tests the reflexes of your ass

Did you do the ass reflex test?
Yes my ass's reflexes are very fast

The Ass Reflex Test by ASaShA November 9, 2010

ass reflux 

When you take a dump but not all of it comes out, and in the hours leading up to and during your next dump the rim of your asshole burns horribly.

Mike: Why is Joe taking so long in the bathroom?
Jerry: He is clearing out the last of his ass reflux.

ass reflux by Johio August 19, 2009