What falls often but never gets hurt?

A little boy came home eating a big candy bar. Seeing the candy bar, his mother remembered he had already spent all his allowance money. Surprised, she asked him where he got it. "I bought it at the store with the dollar you gave me," he said."But that dollar was for Sunday School," his mother replied. Smiling, the boy said, "I know, Mom, but the Pastor met me at the door and got me in for free!"