On his first day on the job, the trainee dialled the kitchen and shouted into the phone:
"Get me a F***ING cup of coffee, quickly!"
The voice from the other side responded: "You fool, you've dialled the wrong extension! Do you know who you're talking to?"
"No," replied the trainee.
"It's the Managing Director of the company, idiot!"
The trainee shouted back: "And do you know who YOU are F***ING talking to, you F***ING idiot?"
"No!" replied the Managing Director indignantly.
"Thank F**K for that!" replied the trainee and slammed down the phone.
