Nothing sir

Headmaster: I've had complaints about you, Johnny, from all your teachers. What have you been doing?
Johnny: Nothing, sir.
Headmaster: Exactly

verb

Teacher: "Nick, what is the past participle of the verb to ring?"
Nick: "What do you think it is, Sir?"
Teacher: "I don't think, I KNOW!"
Nick: "I don't think I know either, Sir!"

products of west bengal

Teacher: What are some products of the West Indies?
Student: I don't know.
Teacher: Of course, you do. Where do you get sugar from?
Student: We borrow it from our neighbor.