Harmonica

"Thanks for the harmonica you gave me for Christmas," little Joshua said to his uncle the first time he saw him after the holidays.

"It's the best Christmas present I ever got." "Hey, that's great," said his uncle. "Do you know how to play it?"

"Oh, I don't play it," the little fellow said. "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."