Straight from Wikipedia...this article is about the December holiday.
"Festivus – A holiday celebrated by those seeking an alternative to the commercialism and pressures of the Christmas holiday season. Celebrations Airing of Grievances, Feats of Strength, the aluminum pole, Festivus dinner, Festivus miracles.
Festivus is both a parody and a secular holiday celebrated on December 23 that serves as an alternative to participating in the pressures and commercialism of the Christmas season. Originally a family tradition of scriptwriter Dan O'Keefe, who worked on the American sitcom Seinfeld, Festivus entered popular culture after it was made the focus of the 1997 episode "The Strike".
The non-commercial holiday's celebration, as depicted on "Seinfeld", occurs on December 23 and includes a Festivus dinner, an unadorned aluminum Festivus pole, practices such as the "Airing of Grievances" and "Feats of Strength", and the labeling of easily explainable events as "Festivus miracles".
The episode refers to it as "a Festivus for the rest of us", referencing its non-commercial aspect. It has been described both as a parody holiday festival and as a form of playful consumer resistance. Journalist Allen Salkin describes it as "the perfect secular theme for an all-inclusive December gathering"."
FESTIVUS FOR THE REST OF US!