TL;DR : A guy in my school class likes to let the trash bin make a lot of noise squeaking since 2 years, already tell him that's really annoying for my ears, doesn't care, so today, I simulate a punch in his belly, didn't like it and I've been reprimanded by the teacher because I shouldn't be violent or show violence in any case.

I still feel bad for what I've done, but I still think that the guy (let's call him Mike) deserved it (I mean, I didn't knock him out or something like that, he even admit he wasn't hurt at all by my punch).

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So, not really more infos than in the TL;DR, that's if you want more details on the story

FYI, We are 23 and on last year of a master degree, so there's no bully or victim thing, I'm not a bully and was actually a victim younger. Mike is also not a victim at all, nobody's a victim or a bully in our class.

Mike likes to be funny and when he found that the trash bin is making a lot of noise (you know, that's the [kind of trash bin where you have to push the top to throw in something](https://images.prod.meredith.com/product/cbaf68981fbe7608414c0e8e7daade24/1510946016901/l/umbra-mezzo-trash-can-rainbow)) and the top is doing like 10 going and comings if you push it strongly enough, he started to push it at the maximum to make a lot of noises.

I don't exactly remember how frequent he does it, but it must be around 2 times per week.

As I am not a morning person at all, I ask him rudely to stop that every time he does it in the morning. I can ignore the afternoon, but that's still annoying to me

This morning, we start class at 8AM (for me, that's a 6AM wake up) and he did it again. That was really too much and I was already up. So I walked to him and simulate a punch in his belly (stop my punch when my fist touched his belly) because words don't work.

Mike was really annoyed, repeating "not cool man, not the belly !" so I started to think "shit, is he kinda weak on this part ?"

But I ignore him, because I was still fed up because of the noise.

After maybe one minute, the teacher is calling me and asking me to come with him out of the class. Mike was outside, crying.

Then the teacher ask me some explanations, telling him that it has been 2 years that he is making that irritating noise and this time, this was too much for me. He tell me something like "It's just a noise, and what you show if violence, and you shoudn't be violent in any case"

After that, Mike explains that life has been tough for him recently, mostly because of the oral presentation of the thesis we made yesterday and that's why he is crying right now. I think my punch was more like a trigger for him.

I said sorry, didn't thought my act would hurt him and go back to class.