The kindergarten class had settled down to its coloring books.  Willie came up to the teacher's desk and said, "Miss Francis, I  ain't got no crayons."

"Willie," Miss Francis said, "you mean, "I don't have any crayons.' You don't have any crayons. We don't have any crayons. They don't have any crayons. Do you see what I'm getting at?"

"Not really," Willie said, "What happened to all them crayons?"