"Homer Defined" is the fifth episode of "The Simpsons"' third season. It originally aired on the Fox network in the United States on October 17, 1991. In the episode, Homer saves the Springfield Nuclear Power Plant from meltdown by arbitrarily choosing the emergency override button using a counting rhyme. Homer is honored as a hero and idolized by his daughter Lisa, but feels unworthy of praise, knowing his apparent heroism was blind luck. Meanwhile, Bart is downhearted after learning that Milhouse's mother forbids the boys to play together anymore because she thinks he is a bad influence on her son.