A father took his boy into a toyshop. The boy got away from his dad and found a statue of a man made of balloons. The boy looked at it for a minute, and then he drew back his fist and hit the balloon man just as hard as he could. The man fell over, and then popped right up.
The confused boy backed off and looked at him again and then hit him again as hard as he could. Again the man fell over, and again he popped right back up.
The boy’s father walked around the corner and saw his son hit the balloon man. The father asked the son, “Why do you think he comes back up when you hit him and knock him down?”
The boy thought for a minute and said, “I don’t know. I guess it’s because he’s standing up on the inside.”