One day, a little girl is sitting and watching her mother do the
dishes at the kitchen sink. She suddenly notices that her mother
has several strands of white hair sticking out in contrast to
her brunette hair.

She looks at her mother and inquisitively asks, "Why are some of
your hairs white, Mom?"

Her mother replied, "Well, every time that you do something
wrong and make me cry or unhappy, one of my hairs turns white."

The little girl thought about this revelation for a while and
then asked, "Momma, how come all of grandma's hairs are white?"