One underwear school story could be about a student who accidentally wore their pajama bottoms, which looked like underwear, to school. Everyone noticed and started giggling. But instead of being embarrassed, the student made a joke about it and soon the whole class was laughing along, turning an awkward situation into a fun memory.
Sure. There was a time when a student's backpack ripped open and their clean underwear for gym class spilled out. Instead of teasing, a kind - hearted classmate helped pick it up and even shared a funny story about a similar mishap they had once. This act of kindness made the student who had the accident feel much better and also strengthened the bond between the two classmates.
No, it's not appropriate. Schools have rules and a code of conduct. Such a concept as vibrating underwear goes against the values of a school environment which is focused on education, safety, and good behavior. It also might make other students uncomfortable if it were to be a real situation in a fanfic - based school scenario.
One common one is when the elastic on the underwear breaks during the school day. This can make it uncomfortable and also cause some embarrassing adjusting. For example, a girl was sitting in class and suddenly felt her underwear slipping because of a broken elastic. She had to be very discreet about fixing it.
No, it is not appropriate. School is an educational institution with a code of conduct. Wearing such inappropriate items, even in the context of a fanfic, goes against the norms of a proper school environment.
In normal school settings, we don't really expect to hear such stories. However, if it did happen, it might be because of a very unusual family situation where the boy didn't have access to proper clothes or was not supervised properly in getting dressed. But again, this is a very extreme and unlikely scenario. The school would have to deal with it delicately, both in terms of getting the boy clothed appropriately and also handling any potential social or emotional fallout among the students.
Maybe the underwear was found in a really spooky place. Say it was discovered in an abandoned house, in a locked drawer among other strange and old items. The fact that it was just there, all alone in a place full of mystery, would make it seem creepy. Also, if there were rumors or stories associated with the underwear, like it belonged to someone who had a really tragic or evil past.
There would likely be shock and disgust. Teachers would probably be horrified and would take immediate action to deal with the situation, such as sending the student to the principal's office.