The Roman comic poet Plautus from the 3rd century BCE originally used the term Festivus to refer to "wild celebrations attended by average citizens cutting lose on religious holidays."
Festivus is now a recently invented secular day of celebration for the entire family and friends. It is held annually on DEC-23 -- about half-way between the Winter Solstice and Christmas. It was apparently created in 1966-FEB by Daniel O'Keefe, of Chappaqua, NY. (b ~1928). O'Keefe, a former writer for Reader's Digest, says that the idea just popped into his head.
In the spirit of holiday, let’s gather around the Fesitivus pole and air our grievances together. Here are some of the grievances Seinfeld are airing this year shared by Huffingtonpost.com.