Many years after Bill Clinton had been President of the United States a famous biographer was going to write Bill's life story.
During the course of his interview he asked Bill, "What was your best and your worst decision during the Presidency".
Bill rolled his eyes back in deep thought and then said, "Monica Lewinski! I'd have to say Monica was my best and my worst decision".
"How could that be, Bill?", asked the surprised biographer.
Bill smiled and then shook his head, "I'd have to say she was both my best and my worst decision for the same reason."
"That's odd. What was the reason for that?", said the biographer.
Bill squirmed in his chair and answered, "Monica had a big mouth."