Joke the One After That

A child was walking down the road one day when he saw an old woman.
"Old Woman?"
"Yes?"
"If I help you across the road will you give me a shiny new dollar?"
"Why yes you little sweetie pie!"
So he helped her across the road. When they got to the other side the boy turned to her.
"Don't worry about the money, you can pay me tomorrow."
The next day the old woman was once again waiting by the side of the road when the young boy once again approached her. She reached for her change purse.
"Old Woman?"
"Yes?"
"May I help you across the road again?"
"Why yes you can young boy. But let me give you your money first."
"That's ok, you can give it to me tomorrow."
He then helped her across the road once more.
The next day the Old Woman was standing by the side of the road holding two bright shiney coins in her outstretched palm. The little boy came whistling up to her. She looked at him and held out the coins.
"Here you go little boy."
The boy nodded his head.
"Give them to me after we cross the road Old Woman."
He helped her across the road once more. As they reached the other side she held out her hand with the money. But instead of taking it the boy instead ate her limbs. What is the moral of the story?

There is none. The boy just wanted to eat her limbs.