Joke

A new teacher was trying to make use of her psychology courses. She started her class by saying, "Everyone who thinks they're stupid, stand up!"

After a few seconds, little Johnny stood up. The teacher was surprised, but realized this was an opportune moment to help a child. "Do you think you're stupid, Johnny?" she asked.

"No, ma'am," Johnny replied, "but I hated to see you standing there all by yourself!"