Back during lunch in 7th grade
One of the girls at the table had made a mess and wouldn't clean it up.
Everyone at the table knew who did it but all the girls at the table were defending her friend and saying she didn't make it.
So along comes one of the assistant principals, she has absolutely no idea what happened, just sees a mess, and says "All the girls can go put the boys have to stay until someone confesses to doing it and cleans up"
I basically flipped stuff and called her loveist and says she can't say that because she has absolutely no idea who made the mess, and she reluctantly calls back all the girls, and after like ten seconds of all the girls sitting with a "well....stuff...." face and all the guys looking at the one who did it like "....well?" she confesses.
9th grade science class
I got called out of class in the middle (don't remember what for) and when I came back, people were stapling a bunch of papers together into a packet before handing them in. So I sit down and wait until everyone's done stapling their papers instead of waiting in line, and then I go up to use the stapler, and I go up to use the stapler and the teacher yells at me, something about me "not having training to use the stapler"