Monday morning, in first period class, Osaka, Tomo, and Sakaki had the same thought. "when class is out, I'm going to need to use the girl's room."
Osaka walked into the first stall, after not having shat the whole weekend. She pulled off her panties and waited.
Tomo walked into the next stall, taking her clothes off as fast as possible, and pissed like a horse. By the sound, Osaka wondered if she participated in the most recent "Drink the most water from the swimming pool contest."
Growing more imaptient, and feeling that her sound would be muffled by Tomo's horse piss, Osaka pushed, and felt like her hole was about to reach it's limit. Splash!
Osaka jumped off the seat and wiped once, because it was a dry log. "Woah!" Osaka said, as Tomo's stream reduced to a dribble.
Tomo pulled her clothes up twice as fast as she put them on. She had to see what was so amazing about Osaka's stall. She pushed the door open with all her strentgh, which tore the hinges right off her door and osaka's door.
"What's so amazing?!" Tomo demanded. Osaka backed away, and pointed to the one turd in her toilet. Tomo's highly competitive nature knew no bounds, not even in the girl's room.
"I can do better! Tonight, the loser buys icecream for both of us!" Osaka agreed, because she had never pinched a larger loaf, and never saw anybody else's poop, and also because she was still in shock after those doors fell off their hinges.
Tomo originally intended to poop. She had not felt a normal urge in 4 days, and she figured she could win anyway. She flushed the toilet, and prepared it for her contest entry.
Tomo took Osaka's stall, and ignored the nusiance odor she left behind. She closed her eyes and grunted like never before. She didn't even care that others could both see and hear her.
After a few minutes, Tomo still made no progress. Her face was covered in sweat, but she didn't care. She was always determined to win any contest, no matter how crazy or pointless, and this was no different.
Some girls just stayed out of the girl's room, because they were afraid of what Tomo might do. Some girls asked if Tomo needed to go to the nurse, but she paid no attention.
Rumors started to spread about what Tomo was trying to do. As they spread, some people started to think tomo was pregnant, others thought she was practicing karate.
Many gathered, wondering if this would be the time tomo quits turning everything into a contest. Still, tomo didn't care.
Tomo was now red, and the collar of her school uniform was totally drenched with sweat.
One more grunt was followed by the loudest splash ever heard in there. Tomo screamed in pain, as her hot red cheeks were covered with water splashing back.
One long and wide log was stuck in in the hole, and it stunned Osaka so much, she didn't even think about having to explain how she lost a bet to tomo.
Many of the curious girls saw the gigantic loaf as well, and then they finally understood the meaning of Tomo's latest contest.
Tomo unraveled some TP as she was preparing to brag about her win for the rest of the day. She then made one pass with the TP and screamed.
Blood was on the TP. Tomo wiped off as much blood as possible, and decided to head to the nurse's office for a pad, hoping to hide the damage.
By then, the sight of the huge shit, and the killer smell drove off most of the girls. Only the ones who could wait no longer would enter that girl's room.
Tomo stood guard of her giant shit, until Sakaki saw it. Sakaki didn't care much, however, as her asscheeks were clenched to the limit, trying not to fill her panties.
She couldn't remember when she last shat, because the side effects of her medicine were so severe. The previous night, her doctor decided to switch medicines.
Before her buttcheeks even touched the seat, she shot out one log the size of tomo's. That served as a cork, holding back high pressure soft shit. The sound was like a tunerized Honda passing by.
In seconds, the bottom 1/4 of the toilet was completely filled with shit. Sakaki hit the flush lever as fast as she could, figuring that no TP would go down with this.
She filled the garbage can with used TP, and watched the toilet water rise and spiral. The water stopped rising, and the spiral stopped, so Sakaki hit the lever again, hoping this would do it.
Tomo said "mine can do that too!" as she hit the lever. By this time, only tomo and Sakaki were in there, as Sakaki's shit odor meant that only the truly insane could be in there.
The water rose around Tomo's, but it stayed in the Ubend. as she flushed a second time, she ran inside the janitor's closet and tried to get a plunger.
The second flush got tomo's turd down, but tomo charged into Sakaki's stall, screaming "I am an expert!" She put so much force in the plunger, that most of Sakaki's shit stuck to the underside of the toilet seat.
That didn't work, so Tomo pulled the lid off Sakaki's toilet. She dropped it and cracked it because of all the sweat on her hands.
She then reached in the top deck and pulled apart all the mechanisms in there. That didn't help, infact, that caused the water to rise (in the topdeck) and spill on the floor.
Sakaki washed her hands and left, sporting the best "WTF?!" expression she ever showed. She just barely made it to class on time.
Tomo then decided to cut her losses, and head to the nurse's office. She hoped some bandages and pads could hide the blood coming from her asshole.
However, the story of tomo's constipated shit got to the nurse's office before she did. The nurse tried to stop her from leaving before she could be sent to a proctologist for complete treatment.
Tomo headed to her class, soaked in sweat, with some blood on her hands, and socks were totally wet from when she broke the mechanism in the toilet.
Sakaki's silence was of no help once the nurse, hazmat cleanup crew, plumber, carpenter, 1/4 of the girls nearby, and even some of the boys witnessed some part of the destruction that day.
Nobody around the incident was ever the same, so tomo would have one huge hell of a time explaining this disaster.

This story is free to be shared, but be sure that I am recognized as the author.

Holy hell.....

Could be better.

I lol'd!