"Thanks for the harmonica you gave me for Christmas," Johnny said to his Uncle Rodney the first time he saw him after the holidays. "It's the best Christmas present I ever got."

"That's great," said Uncle Rodney. "Do you know how to play it?"

"Oh, I don't play it," Johnny said. "My mom gives me a dollar a day not to play it during the day, and my dad gives me five dollars a week not to play it at night."