Little Johnny walked into the kitchen and saw his mother baking a cake.
“I’m going to play in my room for the next two hours,” he announced. “I’d really like a piece of cake when it’s ready.”
A little later, after the cake had cooled, his mother brought him a slice.
Little Johnny looked at it and exclaimed,
“Golly, it worked!”
Confused, his mother asked,
“What do you mean?”
Little Johnny replied,
“Daddy said that if you want to get a piece around here, you have to spend a couple of hours playing first!”