At school one day, the teacher was trying to approach the topic of sex education and asked her students if they'd ever seen anything that was related to sex education on TV.
Mary raised her hand and said she had seen a movie about women having babies. Great, said the teacher, that's very important.
Then Judy raised her hand and told the teacher she had seen a TV show about people getting married. Well, that has to do with it too, said the teacher.
Then Johnny raised his hand and said he had seen a western where some Indians came riding over the hill and John Wayne shot them all. The teacher said, Well, Johnny, that really doesn't have anything to do with sex education.
Yes it does, said Johnny, it taught those Indians not to f**k with John Wayne.