One man asked a schoolboy, "How old is your father?"
The boy replied, "He is 8 years old."
Man: "What?"
Boy: "Because he became a father when I was born 8 years ago."
Question: What goes up and never comes down?
Answer: Up
Question: Why did the teacher wear sunglasses in class?
Answer: Because he was trying to see if his son was in his class.
Martin asked David, "In which state does the Ohio River run?"
David answered with cool, "In the liquid state."