A busy mother asked her young, son to take his baby sister out into the garden and look after for half an hour while she was doing some work in the house.
The boy took the baby out, and they seemed to be playing quite happily when suddenly the mother heard the baby begin to cry, so she shouted to her son, “Bill, what’s the matter with Susan? Why’s she crying?”
“Because she wants my marbles”, answered Billy.
“Well, let her play with a few of them if it will stop her crying,” said the mother patiently.
“I must finish this work, and she’d be in my way in here”
“Because she wants to keep them!” answered Billy.
“No, she doesn’t,” the mother said. “She only a baby. She’s too young to understand anything like that.”