Kirri held her large stomach as she ran frantically for the nearest toilet.  Unfortunately, the only one close by was a small water closet with only one toilet in it and the sink on the outside of it.  It would have to suffice for what was about to happen.  Kirri whimpered as she flung the door open, put the seat up, thrust her pants and panties down, and plopped her chubby, grey ass down on the seat.  She closed her eyes and sighed relievedly as she began to piss furiously into the bowl.  The pressure on her bladder began to rapidly decrease as she could feel her stress melting away.  She continued to pee for about thirty seconds until her fierce, golden stream slowed to a small trickle before ceasing.  She then began to bear down, letting a huge fart rip from her fat butt.  Before too long, a gigantic, lumpy turd began to make its way out of her tailhole.  She grunted hard to force it out.  After a few seconds of effort, the gigantic log splashed down hard into the bowl, nearly filling the entire toilet.  The smell of feces filled the entire small cube of a room, and there was no air freshener in sight.  

“…Ugh.”

Her task finished, Kirri exhaustedly reached for the roll of toilet paper on the stand next to her.  She took a small handful of paper and deftly wiped her bottom with it.  Fortunately for her, her asshole was relatively clean after that dump.  So she decided it was time to flush the toilet.  She reached for the handle behind her and pressed it down.  Needless to say, her handiwork did not go down the U-bend.  It came right back up and resurfaced up into her bum, water and all.  Kirri was a bit flustered that her little “project” did not flush, but at the same time, she enjoyed the feeling of toilet water and poop against her rear.  She blushed as the dirty matter made contact with her backside, even becoming a little moist in her pussy.

“Hee hee…”

The water and shit began to overflow out onto the tiled floor below her now, and Kirri did not care one bit.  She rather enjoyed the fact that she was having a Sitz bath in her own filth, actually…