Kirby's name was spoofed in the animated series "The Rocky and Bullwinkle Show", wherein a man's hat (size 7-5/32) was called the "Kirward Derby". It supposedly had magic powers that made its wearer the smartest person in the world. Kirby considered suing, but his business manager pointed out that it would only bring more attention to the show. Jay Ward, producer of "The Bullwinkle Show", even offered to "pay" Kirby to sue him; however, he did not pursue any further action.