Dont you hate it when people piss you off?

People keep stealing my f***ing backpack and hiding it, and they wear that stupid smirk on their faces the entire time. i hate them so much, and the damn teachers expect me to just sit there and take it. in my mind, i imagine all the different ways of hurting that person, yelling at him, beating him over the head. and i would like it. you people should really not steal my backpack. if you know whats good for you.