MENTAL HOSPITAL...

In a 'mental hospital' a journalist asks the doctor:
How do you determine whether to admit a mental patient or not?
Dr: Well...we'd fill a bath tub with water & then give a teaspoon, a glass & a bucket to the patient & ask them to empty the bath tub.
Journalist: Oh, obviously a normal person would use the bucket cause its bigger.
Dr:"No, a normal person would pull the drain plug! Please go to bed No.39. We will star further investigations on you!"
You also thought of bucket, didn't you??
Please go to bed No.40!