At a Mental Hospital

A group of psychology students were once taken on a guided tour of a mental hospital as part of their monthly project. A few students were very boisterous and their behavior was totally despicable. They were completely insensitive to their surroundings and made fun of the patients.

Later the students were offered lunch at the canteen. The notorious bunch of students once again got to their pranks, now aimed at the canteen staff. “How do you manage the extreme nuts here?” one of them asked the server. “Not all are like that. Only those who fail the test are classified so”, the server said with a smile.

“What test?” asked the students.

“We fill a huge tub with water and give them a bucket, a mug and a cup and tell them to empty the tub as quickly as possible”.

“ Hey that is simple. Surely they will know that the bucket will help them empty the tub the fastest”, said the students. 

The server smiled and said, “No. The normal ones generally pull out the plug. hmm... So are you all ready to join them in here now that you have failed the test?”

Needless to say there was stunned silence all around.