Festivus

Festivus is a secular holiday celebrated on December 23 as an alternative to the pressures and commercialism of the Christmas season. It entered the zeitgeist as a result of a Seinfeld episode called The Strike.

The holiday, as portrayed in the Seinfeld episode, includes practices such as the "Airing of Grievances", which occurs during the Festivus meal and in which each person tells everyone else all the ways they have disappointed them over the past year. After the meal, the "Feats of Strength" are performed, involving wrestling the head of the household to the floor, with the holiday ending only if the head of the household is pinned.

Additionally, instead of a Christmas tree, observers erect a non-descript metal pole.

Trivia

 * If you type "Festivus" into Google, you will see a Festivus Pole on the search results page.