Grandpas know everything?

Be very careful that you know the question before you give the answer.

Little Tony was staying with his grand parents for a few days. He'd
been playing outside with the other kids for a while when he came into
the house and asked, "Grandpa, what is that called when
people are sleeping on top of each other?"

He was a little taken aback, but decided to tell him the
truth. "It's called sexual intercourse, sonny."

Little Tony just said, "Oh, OK" and went back outside to talk and
play with the other kids. A few minutes later he came back in and said
angrily, "Grandpa, it is not called sexual intercourse! It's called Bunk Beds!"