The teacher told the class the story of a man who swam a
river three times before breakfast. Johnny laughed. "Do you doubt
that a good swimmer could do that?" asked the teacher. "No, sir,"
answered Johnny, "but I wonder why he did not swim it four times and
get back to the side where his clothes were."
Teacher: A noun is the name of a person or thing. Now,
who can give me a noun?
First boy: A cow.
Teacher: Very good. Another noun?
Second boy: Another cow.