Joke that I read the other day:

"A young technical support worker was leaving the office at 5:30 pm when he encountered the Chief Executive standing in front of the office shredder with a piece of paper in his hand.

The Chief Executive told him "This is a most sensitive and important document and my secretary had to leave early. Can you make this work?".

"I can, Sir" said the technical support worker. He turned on the machine, inserted the paper and pressed the Start button.

"Excellent", said the Chief Executive as his document disappeared into the machine. "I just need one copy".

The moral of the story is never to assume that your boss knows what he is doing.".