It might seem rude but often teachers do not get any breaks to eat so they have to shove food in while at their desk. Remember, between classes when you are roaming the halls, they are talking to students walking out and walking in. And during lunch, many of them have the job of checking the lunch room or another duty to monitor while you get to chill. Then after school, many of the teachers are in charge of some group or after school activity. Even if it seems rude... it is very possible if that teacher did not snack when they did... they would not make it through the day without getting weak or even passing out. If there is a school rule about food in the classroom, see if it applies to both students and teachers, if not... they are allowed!
BECAUSE THEY WANT TO TEASE US!!!!!! THEY WANT TO MAKE US HUNGRY AND MAD..... honestly though, i dont get why.... if they want us to be on track and not get off task they should stop teasing us and allow us to eat and drink in class... then maybe we would be on task for once >.<
Sounds very unprofessional, agree, but they're probably so busy they don't have time for proper lunch breaks. Eating at their desk is necessary. But it would be nice if they set an example for their kids. On the other hand, with all the crazy stuff teachers must handle these days, eating junk food may be the only fun thing keeping them going, lol.