Christmas was coming near and it was time for Little Johnny to finish his holiday shopping. He went into a toy shop, took a toy plane, gave the shopkeeper fake money and started to leave.

The shopkeeper spoke up, "Excuse me little boy, this isn't real money."

Little Johnny didn't reply and continued walking.

The shopkeeper repeated himself, but Johnny kept walking.

The third time the shopkeeper called him, Johnny replied, "What?"

The shopkeeper said, "I'm sorry, young man, but this is not real money."

Johnny looked at the plane in his hands, looked at the shopkeeper and finally said, "And this isn't a real plane."