A farmer who lived in a remote part of the country never ventured into the city until one day he was persuaded by his wife to take the family to a shopping mall. It was their first taste of city life. While the wife was in the toilet, the man and his young son looked around the mall. They were amazed by everything they saw, especially the two shiny silver walls that could move apart and then slide back together again.

"What is it?" asked the boy.

The father, never having seen an elevator, said: "I don"t know, son."

They watched enthralled as an elderly lady went over to the moving walls and pressed a button. The walls then opened and she shuffled into a small room. The walls closed behind her, and the boy and his father gazed in awe as the small numbers above the walls lit up in sequence. They continued to watch until the last number was reached and then the numbers began to light up in reverse order. Finally the walls opened again and out stepped a beautiful young woman.

Without taking his eyes off her, the father quietly said to the boy: "Go get your mother."