There's this Jack who was working for a multi-millionaire as a house guard. One day, while the millionaire was driving out to catch an early morning flight to conclude a business deal, Jack ran out from the guard house and stopped the millionaire's car just right in front of the gate.

He said 'Sir…Sir.. are you going to board a plane?'
'Yes, why do you ask?' asked the millionaire.
'You had better cancel the trip. You see, last night I dreamt about the plane going to crash.'

Curious over the early morning fright that Jack had given, the multimillionaire decided to cancel his trip. 'You better be damn right for this is a million dollar deal..'

The following day, there were news reports that the plane which the millionaire was supposed to take had indeed crash landed. 'Thank God, I cancelled the trip,.' the rich man said realising that what Jack had said had come true, he called for him.

When the guard came that morning, the millionaire gave him his salary and FIRED him.

WHY?

ANSWER: Jack was supposed to guard! the house at night. NOT to Sleep and Dream all night!