“This year there are going to be two types of students in my class - good students and bad students. Who’s bad in this class? Just try me, because I’m already starting a list, even if this is only the first day of class!”
Or how about this one?
Isn’t it funny how loud the requesting party is? If learning by example is a necessity in teaching, then surely constant screaming in a teacher reinforces loud behavior in students, whether it is on a conscious or subconscious level.