An Amish boy and his father were in a mall. They were amazed by  almost
    everything they saw, but especially by two shiny, silver walls that
    could move apart and then slide back together again.

    The boy asked, "What is this, Father?"

    The father (never having seen an elevator) responded, "Son, I have
    never seen anything like this in my life. I don't know what it is."

    While the boy and his father were watching with amazement, a fat old

    lady in a wheel chair moved up to the moving walls and pressed a  button.
    The walls opened and the lady rolled between them into a small room.  The
    walls closed and the boy and his father watched the small circular
    numbers above the walls light up sequentially. They continued to  watch
    until it reached the last number and then the numbers began to light  in
    the reverse order. Finally the walls opened up again and a gorgeous
    24-! year-old blonde stepped out.

    The father said quietly to his son, "Go get your mother."