Here's one a friend of mine just sent me.  Hope you like it.

An Amish boy and his father were visiting 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 rolled 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,
voluptuous 24 year old blonde woman stepped out.
The father, not taking his eyes off the young woman,
said quietly to his son ...
"Go get your mother."