AITA

AITA for being informal with my teacher
basically, we had to do a dutch presentation about a medieval/renaissance book, after this one group was finished there was a discussion about the presentation between my friend and the teacher and the teacher got mad over some little thing and started to insult my friend, he reminded her of her of treating him differently solely because of his hairstyle ,so I intervened, during my intervention I said : Womp womp. My teacher got mad again and asked for my name so she could write me up. When I was giving her my name I accidentally said: you (the informal you) instead of you (the formal one in dutch) and she got PISSED, so, I shouted: OH SORRY YOUR HONOR, YOUR MAJESTY, PRAISE THE LORD. Now she thinks that I'm a barbarian and that I have no sense of etiquette. She has also emailed the head teacher of this year. So, AITA?

Not necessarily because it seems to have been a mistake/accident on your part. Some simple clarification should do just fine in my opinion.

You cooked her

this is not reddit bro