Four-year old Johnny was curious about her mother’s grey hairs. One day, he 

asked her, “Mommy, why is some of your hair turning grey?”

The mother seized the opportunity to give him a life lesson. She replied, “You see, 

Johnny, every time a baby does something naughty, one of Mommy’s hair strand turns to grey.”

Johnny replied, “So that’s why grandmother has a head full of grey hair.”