A Man Runs Into a Dentist's Office .....

A man runs into a dentist's office and screams 'help me I'm in trouble.' The dentist asks him if he has a dental emergency and the man says 'No I think I'm a Moth!.' 

The dentist asks him why he didn't go to the psychiatrist's office down the hall?  The man replied  'Because your office has a light on!.'