On his first day, he dialed the kitchen and shouted into the phone: "Get me a cup of coffee, quickly!"
The voice from the other side responded: "You fool, you've dialed the wrong extension! Do you know whom you're talking to?"
"No" replied the trainee.
"It's the Managing Director of the company, you idiot!"
The trainee shouted back: "And do you know whom YOU are talking to, you IDIOT?"
"No!" replied the Managing Director angrily.
"Thank God....!!" replied the trainee and put down the phone.