A guy was really upset with his wife's wild mood swings. He could never tell what kind of a mood she was in. One day he was at the department store, walking past the jewelry counter and saw a sign for "Mood rings". He asked the girl about them. She said they will turn green if the wearer is in a good mood and red if in a bad mood. He thought that's just what I need. So he bought it and took it home and presented it to his wife. Several days later she was showing the ring to a friend of hers. The friend asked, How does it work? She said if I am in a good mood it turns green. The friend said what happens if you are in a bad mood? It leaves a huge red mark on his forehead!