What are some things you don't want to hear right now?

Hello, I'm a student and I want to know what are some things you don't want to hear. I've heard some teachers say that they find it obnoxious when people say "She/He's a great teacher because they do \[insert thing here\]". I want to know what are some things you find the most annoying, repetetive, or obnoxious to hear.