- What do you call someone who keeps talking when people are no longer interested?
- A teacher.

Teacher: What are you writing,Sarah?
Sarah: A letter to myself, sir.
Teacher: And what does it say?
Sarah: I don't know. I won't receive it till tomorrow.
- Where is the English Channel?
- Not sure, Miss Smith. Our TV doesn't receive it.
- Where can you find an ocean without water?
- On a map.

-Name something important that didn't exist 100 years ago.
- The modern world, Miss.

- What's the best way to break a computer?
- Let a grown up use it.
- Are you chewing gum?
- No, I'm Sarah Smith.
- Why did the teacher put sugar under his pillow?
- He needed to make his dreams sweeter!