HZ: In 1982, Princess Anne, the second child of the Queen of England, Olympic Equestrian, is competing at the Badminton Horse Trials.

PAUL BAKER: She's jumping over all these obstacles and oops, she slips and falls in the water off an obstacle. And all of the photographers rush forward to take a photograph, and she tells them to "naff off". Or "naff orf".
HZ: She's not allowed to drop an F-bomb really, she's a royal.
PAUL BAKER: No, but 'naff' was a Polari word.

HZ: Polari. Just a couple of decades before, it would have been unthinkable that someone like Princess Anne would have used a Polari word, or that she would even have known one.