The Boy Who Stood Up

One day a teacher stands up in front of her class and asks if anyone in the class is an idiot, and says that if there is one, then he/she should stand up.

After a minute, a boy stands up.

The teacher then asks the boy if he actually thinks he's an idiot.

The boy says, "No, I just didn't want to see you standing there all by yourself."

Explanation

Experiment

The joke plays on the boy's quick wit. Instead of admitting he's an idiot, he turns the situation around and makes it seem like he stood up to keep the teacher from feeling lonely. It's a clever way of avoiding the question and making the teacher look a bit silly.