When you were a kid at school what was the most stupid and unfair (a fault on the teacher's part) reason you or another kid got in trouble?

For me, it was back in 3rd grade, this boy named Taivian got in trouble for talking about fucking WATER GUNS... literally.

So the teacher had made up a system where she gave out this fake currency for good behavior and good grades. If you misbehaved or got bad grades you'd lose the currency. The currency could be used to buy snacks and some items like pretty colorful pencils or erasers and other stuff. And the teacher had just introduced this system and was presenting this to the class. Then the interaction between Taivian and the teacher went something like this:

So Taivian was just casually talking to his friends. And I didn't quite catch what he said, but I heard the word "guns" at the end.

Then the teacher in a really angry yelling tone said: "TAIVIANNN!!! DO YOU WANNA LOSE YOUR MONEY ALREADY? Talking about guns..."

Then Taivian said: "No no no but not real guns ma'am! Water guns! These really cool new water guns I have to play with my friends at the water park, and-"

Then she cut him off yelling at the top of her lungs: "I DON'T CAAAAAAREEE!!!"

And even as a 3rd grader I was like... what the hell?

I know it wasn't a cover up on his end either because I asked the other kids and he really WAS just talking about water guns in specific.

For some reason the teacher seemed to really dislike this kid just in general despite him not doing anything particularly absurd, but this was by far the stupidest reason he got in trouble.