Has a teacher ever told u they cant tell that u r a very intellingent student...?

or u r disrespectful to all teachers, u don't know how to act just because u laughed at a pretty funny joke. this is what happened in school we had a sub so someone did something really funny and u laughed but u werent the only 1, so she told u to get out but gave me another chance, later on in the day we have free time so i am talking to a friend and i laughed and the lady says i am watching u i almost put u out the girl told her how i am and the lady said i cannot tell because that is not how gifted student( the students who had more intellect) and i disrespect all teachers and i do not know how to act. so what should i do let it go or tell her how i feel!