What are the classic sayings of teachers' jokes? Thank you, everyone.

None of you can solve this physics problem. Alas, I am kind. As a matter of fact, I don't like to force work on you. You have to force me. Well, then you should hands in the air and howl like a pig. Why are so few people sleeping today? Raise your hand if you don't come. You are afraid of me, but you are really not afraid of me. How could you do that? You really can't be proud In my world, you kill without shedding blood, and people don't blink. You must be very angry with me. What do Newton and Einstein have in common? Student: They are all dead. Teacher: What else? Student: They are all dead!