Afraid of the Dark 

One summer evening, during a violent thunderstorm, a mother was tucking her small boy into bed. She was about to turn off the light when he asked　with a tremor in his voice,
"Mommy, will you sleep with me tonight?"　

The mother smiled and gave him a reassuring hug. "I can't dear," she said, "I have to sleep with Daddy."

A long silence was broken at last by a shaken little voice saying, "The big sissy."

Note: sissy, 胆小鬼