Did you hear about the speed-eating champion from Japan? Takeru Kobayashi, 29, has been blowing away the competition for years, hoovering up hot dogs, rice balls and cow brains in record time. But all that guzzling recently caught up with the man some describe as the Tiger Woods of speed-eating. He has developed arthritis of the jaw, which I suppose is the same as Roger Federer coming down with tennis elbow. Last week he lost his crown to a rival from (where else?) the United States.