From Got Questions:
Answer: Flying Spaghetti Monsterism (also known as Pastafarianism) is a “religion” created by a man named Bobby Henderson. Mr. Henderson created this satire in protest of the Kansas State Board of Education’s decision to teach intelligent design as an alternative to the theory of evolution. In essence, he was asking, “If foolish religious ideas like that of Intelligent Design have to be given equal time in high school biology classes, then why can’t other foolish religious ideas be taught alongside with it?” So, in protest, he made up a silly set of religious beliefs and demanded that they be given equal time in biology classes alongside the theories of evolution and Intelligent Design. His point seems to be that to teach Intelligent Design in schools is as absurd as teaching that the Flying Spaghetti Monster made the world and deceived scientists into believing evolution. (Note: Flying Spaghetti Monsterism is simply a new, and more entertaining, variation of Russell’s teapot and the Invisible Pink Unicorn.) More.
My sense, based on some years of coverage at Uncommon Descent, is that Pastafarianism has changed its focus.
Our advice would be, look out. It’s one thing to do this in a free society where people sort of get the intended joke, even if they think you are a dullard and out of touch. It didn’t go so well when they tried it in Putin’s Russia.
See also: Legal workplace accommodation of pastafarianism as a religion
Wow: Court rules for common sense… updated No, not a religion; an overelaborate prank.