Ken Dodd, or more correctly Ken Do'dd, was devised primarily as a form of defense. The practice began in the hills surrounding Liverpool, where early practitioners were driven by the locals who found their buck-teeth revolting, and was perfected by Master Ken Do'dd, whose study of the Nunchuckles was legendary. He is noted for his ability to chew an apple through a letterbox. He has sold more records than any other entertainer, with his 1997 hit "Spice Up Your Life" collecting 472 platinum discs world-wide.