Discordianism /dis-kor'di-*n-ism/ n.
The veneration of Eris, a.k.a.
Discordia; widely popular among hackers. Discordianism was
popularized by Robert Shea and Robert Anton Wilson's novel
"Illuminatus!" as a sort of self-subverting Dada-Zen for
Westerners -- it should on no account be taken seriously but is
far more serious than most jokes. Consider, for example, the
Fifth Commandment of the Pentabarf, from "Principia Discordia":
"A Discordian is Prohibited of Believing What he Reads."
Discordianism is usually connected with an elaborate conspiracy
theory/joke involving millennia-long warfare between the
anarcho-surrealist partisans of Eris and a malevolent,
authoritarian secret society called the Illuminati. See Religion in Appendix B, Church of the SubGenius,
and ha ha only
serious.