I'll keep this short and simple. I've had this happened to me on several occasions. I go to class and sit at the usual spot. I don't change my seat ever but for some reason girls like to take my seat. It's not like the class is ever full so it pissed me off. Usually the girls that pull this off are the ones that I haven't really spoken too. I've responded before by sitting right next to them and not saying anything about it just coming to the next class early to take my seat back. This is a shittest isn't it? How should I respond next time this happens? Simple negging? I don't want to be the little kid crying for his seat, after all we're in collage.