On the way back from a Cub Scout meeting, the son asked the Daddy......

"Dad, I know that babies come from Mommies tummy, but how do they get there in the first place?

The Dad, not wanting to go into the birds and bees lecture, hemmed, hummed and hawed for a while until the son said.....

"It's okay Dad, you don't have to make something up. If you don't know the answer, just say so."