An elementary teacher decides to begin a segment of class on sex education by finding out a little about how much her students already know. Her first question to the class is "how many sexual positions do you know?" Billy, who is in the back of the class, quickly raises his hand and starts shouting 47, 47, 47.

However the teacher calls on Sally who is sitting in the front row. Sally says the only position she knows is where the woman lays on her back with her legs spread and the man climbs on top of her. The teacher tells the class it appears Sally is aware of what is called the missonary position. Just then Billy raises his hand again and starts yelling 48, 48, 48.