Little Johnny came home from school one day and walked into the kitchen. His grandma asked him, "Johnny , what did you learn in school today?"

Little Johnny replied, "Well, we learned about penises, and vaginas, and sexual intercourse, and masturbation."

Grandma hauled off and slapped Johnny, hard. He ran up to his room, crying. Little Johnny's mother walked in and cried, "Ma! Why did you go and hit Johnny!?"

Grandma replied, "Well, I asked him what he learned in school today. He started talking about sex, and penises, and masturbation!"

Little Johnny's mother said, "Ma! That's what they learn. It's called sex education!"

Well, Grandma felt bad about hitting Johnny, so she went upstairs to apologize. When she opened his bedroom door she found him on his bed masturbating. Without a blink, she said, "Johnny, when you're finished with your homework, come downstairs and talk to me."