Two little boys, four and five years old respectively, were playing quietly, when the one of four years struck the other on his cheek. An interested bystander stepped up and asked him why he had hit the other who had done nothing.
"Well," replied the pugilistic one, "last Sunday our lesson in Sunday-school was about if a fellow hit you on the left cheek turn the other and get another crack, and I just wanted to see if Bobbie knew his lesson."