Reverse Shitting 

That moment when you're having terrible constipation and you try to push shit out, and it almost gets out... But you stop pushing for a few seconds and the shit is sucked back in to your anus. It sounds like a fart sample, but reversed.

The fine fellow Shrek was reverse shitting the other night. I heard it getting sucked back in really loud.

Reverse Shitting by Zromelussy dealership January 7, 2023

shitting in reverse 

The circumstance where you find yourself in the position of needing to defacate but unable to locate a suitable venue for the proceedings. The resultant clenching of the sphincter in the hopes of preventing an incident of touching cloth results in the feeling that the incipient turd is reversing back up into your lower intestines.

May be performed intentionally in order to preserve the waiting feces for later use. E.G in a cleveland steamer.

Oh man, I hope we find a toilet soon. I'm shitting in reverse.

If I have shit in reverse again I'm going to end up spitting it out.

shitting in reverse by cuksocker November 6, 2010

Reverse Sitting 

1) the opposite of regular sitting.
2) to sit in a seat using the regular base as the back support and the regular back support as the seat.

*when one is reverse sitting properly their feet and legs should be projected upward and their back should be rested on what normally would be the seat.

jon and the mystery guest road the entire way home reverse sitting.

Reverse Sitting by whored September 23, 2010