The young girl arrived for an interview to become a trainee executive.

“So, Miss Brightly, what are your qualifications?”

“Well I graduated from Oxford with a first-class honours degree, having achieved the highest marks ever. I then spent a year in the States, running the day-to-day business of a small airline and in my spare time wrote a textbook on modern business practices.”

“Well, that’s wonderful,” enthused the interview panel. “Is there anything you wish to add?”

“Yes, I’m a pathological liar.”