Many people have been inspired by this zany, offbeat Seinfeld holiday and now celebrate Festivus as any other holiday. According to the Seinfeld model, Festivus is celebrated on December 23rd. However, many people celebrate it other times in December and even at other times throughout the year. All of these traditions are based upon the events in the Seinfeld episode, Strangely enough, our Festivus traditions also have roots that pre-date Seinfeld, as it began in the household of Dan O'Keefe, a television writer who is credited for writing the Seinfeld episode. Learn all about the traditions of a Seinfeld-based Festivus and witness the nuances of the original Festivus, as celebrated by the O'Keefe family. See first-hand how Festivus is celebrated by others and receive plenty of advice and tips to aid in your own Festivus party plans.…show more content… Frank Costanza: Many Christmases ago, I went to buy a doll for my son. In the episode, Kramer becomes interested in resurrecting the holiday after hearing about the plight of his friend-Frank Costanza's son-George. Meanwhile George uses Festivus, a holiday he once hated in his youth, as a excuse to his boss Mr. Kruger after he had been confronted for handing out cards suggesting a donation had been made to a fake charity called The Human Fund. Attempting to call his bluff, Kruger insisted that he accompany George to his home and see Festivus in action. The Airing of Grievances: At the beginning of the Festivus dinner, each participant tells friends and family all the times they have disappointed him or her the past year. In the episode the meal appeared to be meat loaf on a bed of lettuce. No alcohol was served, but George Costanza's boss, Mr. Kruger, drank from a flask. Festivus is not considered over until the head of the family has been