It was an invention of a writer and a man-made holiday unknown to the masses until it was aired on Seinfeld in 1997 as a Christmas-substitute for the Costanzas where traditions such as the "airing of grievances" could be observed.
One Southern California jail inmate had a few grievances and claimed Festivus as his own holiday in order to get better meals, KTLA News reports.
Malcolm Alarmo King claimed Festivus as his own tradition in order to upgrade to kosher meals in Orange County Jail.
He actually was granted double portions, according to KTLA. But soon sheriff's officials became aware that the tradition "probably wasn't legitimate." (Ya think? Cue quirky bass line).
King now has to eat salami meals like the rest of them in jail.