Picking Up Clothes

Weary of constantly picking clothes up from the floor of her son's room, a mother finally laid down the law. Each item of clothing she had to pick up would cost her son 25 cents.

By the end of the week, he owed her $1.50. She received the money promptly, along with a 50-cent tip and a note that read:

"Thanks, Mom. Keep up the good work!"