Check yourself before you wreck yourself

In a Psychiatric Hospital, a Journalist asks the Doctor: "How do you determine whether to admit a person as a patient or not?

Dr: Well ... we'd fill a bathtub with water and then give a teaspoon, a glass and a bucket to the patient and ask them to empty the bathtub.

Journalist: Oh, obviously a normal person would use the bucket because it's​ bigger.

Dr: No, a normal person would pull the drain plug! Please go to bed #23. We will soon start further investigations on you.