"Criteria for separating abnormal"...Nice 1..

During a visit to the mental asylum, a visitor asked the Director what is the criteria that defines a patient to be institutionalized. 

"Well," said the Director, "after we fill up a bathtub, we offer a teaspoon, a teacup, and a bucket to the patient and  ask the patient to empty the bathtub" 

Here are the choices: 

Would you use the spoon? The teacup?  The bucket? 

"Oh, I understand," said the visitor. "A normal person would choose  the bucket as it is larger than the spoon or the tea cup." 

Noooooo," answered the Director, looking at the visitor with new  interest.  

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"A normal person would pull the plug".