Little Jordan was staying with his grandmother for a few days. He'd been playing outside with some of the neighborhood children for a while when he came into the house and asked her, "Grandma, what is it called when people sleep on top of each other?"
She was a little taken aback, but decided to tell him the truth.
"It's called sexual intercourse, darling." Then she explained all about the birds and the bees to him in some detail.
Little Jordan just said, "OK" and went back outside to play.
A few minutes later he came back in and said angrily, "Grandma, it is NOT called sexual intercourse! It's called bunk beds!"