A new teacher was trying to make use of her psychology courses.
She started her class by saying, "Everyone who thinks you're stupid, stand up!"
After a few seconds, Little Johnny stood up.
The teacher said, "Do you think you're stupid, Little Johnny?"
"No, ma'am, but I hate to see you standing there all by yourself!
ANOTHER JOKE
Little Johnny was not paying attention in class so the math teacher called on him and said, “Johnny! What are 5, 2, 28 and 40?” Little Johnny quickly replied, “NBC, CBS, HBO, and Cartoon Network!