There was a little girl who asked her mom if she could take their dog for a walk. The mom said "H'mmm, I don't think that is such a good idea because she is in heat."

The little girl wanted to know what that meant. The mom wanted to avoid the subject, so she told the little girl to go ask her father if she could take the dog for a walk. She found her father in the garage and asked him about taking the dog for a walk. He said "That is probably not a good idea because the dog is in heat."

So she asked her dad what that meant. He didn't really want to get into it with the daughter, so he got some gasoline and smeared it all over the dog's hindquarters and tail. He said "There, now it should be okay for you to take the dog for a walk."

About an hour later the little girl came home, but she didn't have the dog with her. When the father asked where their dog was, the little girl replied, "Oh, I guess our dog ran out of gas, but don't worry -- there's another dog pushing her home!"