Manic depression

The psychology instructor had just finished a lecture on mental health and had proceeded to give an oral quiz to the freshman class.

Speaking specifically about manic depression, the instructor asked, "How would you diagnose a patient who walks back and forth screaming at the top of his lungs one minute, then sits in a chair weeping uncontrollably the next?"

A young man in the rear of the room raised his hand and answered, "A basketball coach?"