One day, a little girl walked up to her mother, looked closely are her hair and sadly asked, "Mommy, why is some of your hair white?"

"Well, dear," her mother explained, "each time you do something wrong and make me cry or feel unhappy, one of my hairs turns white."

The little girl thought about this for a few moments, then said, "Mommy, how come ALL of grandma's hairs are white?"