A young boy had been taken for his first visit to a nudist camp by his
parents. He was surprised at the different sizes of the male organs and
mentioned it to his father. The father, being rather well endowed, explained
that it was a measure of intelligence, the big ones being smart and the
small ones being dumb.
That afternoon the father was looking for his wife and asked his son if he
had seen his mother. "I saw her about ten minutes ago, She was with a real dumb man, but he
seemed to be getting smarter every minute."