Old Story Retold: Mood Ring

(Originally from 2/28/2001)
(I'm not sure if I made this up or not. The original had names in it [removed to protect the guilty]. I do remember a mood ring... Oh well, it's short and funny.)

My daughter bought a mood ring the other day.
When she's in a good mood, it turns green.
When she's in a bad mood, it leaves a red mark on my son's forehead.