The app flashed as the room quickly stopped laughing, taking it as a good sign Jane looked up. She was still in front of the class, still crouched and pants obviously still filled with poop. The app had successfully made the statement true however, as all the girls in the classroom were also in diapers, some standing beside their desk squatting just like Jane, she really did fit right in. The classroom had changed too, a row of diaperbags in various sizes were lined on the walls. Jane already handed one by her teacher. Jane whimpered off to the back, now equipped with a private changing room as she pulled off the used diaper and cleaned herself up. This was terrible, how could she have known the app would have done this? Another girl walked into the changing room, the curtain flowing as she bashfully removed her own diaper, grabbing a fresh one and fixing it before walking back out. Jane held the fresh diaper in her hand, maybe if she just changed it again it would work. She pulled out the phone again, Jane cursed, it wasn't charged at all since yesterday, the low power bar flashing, she had to make it good.
Jane clicked on herself again. "Jane is holding a unused diaper in her classroom." Jane held her breath as she changed the "is" to "isn't" and hit confirm. The diaper disappeared from her hand, as well as the changing area. Jane breathed out a sigh as the classroom returned to normal, the diapers fading away from the side of the classroom. A pair of panties returning to her groin as Jane fixed up her pants. "Yes!" Jane cheered as she jumped for joy. The phones screen turning black as it died.
As she landed she froze. The girls were still acting strange, one still squatting beside her desk, a visible trail of pee staining down her leg onto the floor. Instead of doing anything, the girl simply shook her leg and returned to her chair. The app still carried it over, and it was worse than ever before, now diapers didn't exist at all, and everyone was still not potty trained. No doubt given the reality changes potty training itself wasn't even a thing. Jane had just doomed humanity to do their business like wild animals.
Jane returned to her seat cautiously. The phone, and thus the app, was dead, she would need to charge it first, but her charger was probably at home. She had a whole day of shitty school ahead of her.