Not so stupid

        Two men were sitting next to each other on an airplane. They were on a long journey. One of them was a teacher. The other was a farmer. They sat without talking for a while. Then the farmer said, “ Let’s do something to pass the time.”

        “What do you want to do?” the teacher asked.

        “We can ask each other riddles, “ the farmer said. “You start.”

        “Let’s make the rules first, “ the teacher said. “And let’s make the game more interesting. Let’s play for money. If we don’t know the answer to a riddle, we have to pay each other $100.”

        The farmer thought about this for a while. Then he said, “That’s not fair. You are a teacher, an educated man. You know more things than I do. I am just a farmer.”

        “That’s true,” the teacher said. “What do you think we should do?”

        “If you don’t know the answer to a riddle, you pay me $100. If I don’t know the answer to a riddle, I’ll pay you $50.”

        The teacher thought about this, then he said, “OK. That’s fair. Who’ll go first?”

        “I will,” the farmer said. “Here is my riddle. What has three legs when it walks, but only two legs when it fillies? Hmm. That’s a good one. I’m afraid I don’t know the answer.”

        He gave the farmer $100, and then said, “Tell me the answer. What has three legs when it walks but only two legs when it flies?”

        “I don’t know, either,” the farmer said, and gave him $50.