got this from huiyuan's post in friendster:)

The psychology instructor had just finished a lecture on mental health and was giving an oral test.

Speaking specifically about manic depression, she 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 raised his hand and answered, "A basketball coach?"