Is it normal that i used to act like this?

When I was in grade 9, a guy who I went to school with wanted me to call in, lie and say he is sick. I told my old school that he wanted to sleep with her instead. He got his revenge and told my old teacher that I wanted to sleep with him. We got moved to the same class as me(we were in the same age group).

Two years ago I was drunk and in grade 12 and attending the same school. I told a friend who lives in a different country on skype. Awkward things about my whole school and I was joking. Somehow my old teachers found out and I got laughed at.