Question: Apostacon, is an annual event about atheism, freethought, humanism, secularism and skepticism in the (Midwestern) United States, the conference, which embraces the parody religion of which deity of the Church of the Flying Spaghetti Monster, or Pastafarianism?
Context: Irreligion in Mexico refers to atheism, deism, religious skepticism, secularism, and secular humanism in Mexican society, which was a confessional state after independence from Imperial Spain.  The first political constitution of the Mexican United States enacted in 1824, stipulated that Roman Catholicism was the national religion in perpetuity, and prohibited any other religion.  Moreover, since 1857, by law, Mexico has had no official religion; as such, anti-clerical laws meant to promote a secular society, contained in the 1857 Constitution of Mexico and in the 1917 Constitution of Mexico limited the participation in civil life of Roman Catholic organizations, and allowed government intervention to religious participation in politics. The Flying Spaghetti Monster (FSM) is the deity of the Church of the Flying Spaghetti Monster, or Pastafarianism.  Pastafarianism (a portmanteau of pasta and Rastafarian) is a social movement that promotes a light-hearted view of religion and opposes the teaching of intelligent design and creationism in public schools.  According to adherents, Pastafarianism is a "real, legitimate religion, as much as any other".  It is legally recognized as a religion in the Netherlands and New Zealand – where Pastafarian representatives have been authorized to celebrate weddings and where the first legally recognized Pastafarian wedding was performed in April 2016.  However, in the United States, a federal judge has ruled that the "Church of the Flying Spaghetti Monster" is not a real religion. The Invisible Pink Unicorn (IPU) is the goddess of a parody religion used to satirize theistic beliefs, taking the form of a unicorn that is paradoxically both invisible and pink.  She is a rhetorical illustration used by atheists and other religious skeptics as a contemporary version of Russell's teapot, sometimes mentioned in conjunction with the Flying Spaghetti Monster. The Church of the SubGenius is a parody religion that satirizes better-known belief systems.  It teaches a complex philosophy that focuses on J. R. "Bob" Dobbs, purportedly a salesman from the 1950s, who is revered as a prophet by the Church.  SubGenius leaders have developed detailed narratives about Dobbs and his relationship to various gods and conspiracies.  Their central deity, Jehovah 1, is accompanied by other gods drawn from ancient mythology and popular fiction.  SubGenius literature describes a grand conspiracy that seeks to brainwash the world and oppress Dobbs' followers.  In its narratives, the Church presents a blend of cultural references in an elaborate remix of the sources. The Neo Pastafarian Church of Costa Rica is the first Neo Pastafarian Church worldwide.  It was founded in San José, Costa Rica, in the year 2014, and is fully downward compatible with the Church of the Flying Spaghetti Monster. Atheism, agnosticism, deism, scepticism, freethought, secular humanism or general secularism are increasing in Australia.  Post-war Australia has become a highly secularised country.  Religion does not play a major role in the lives of much of the population. Bathyphysa conifera, sometimes called the flying spaghetti monster is a bathypelagic species of siphonophore in the Rhizophysidae family.  The specific epithet "conifera" ('cone-bearing') is due to the unusual shape of the cluster of gonophores.  In Japanese it is called マガタマニラ / まがたまにら / 勾玉韮 ("magatamanira ")(literally 'jewel leek').  In Chinese it can be called 飞行的面条怪兽 ("fēixíng de miàntiáo guàishòu ") (literally 'flying noodles monster'). The Gospel of the Flying Spaghetti Monster is a satirical book written by Bobby Henderson that embodies the main beliefs of the parody religion of the Church of the Flying Spaghetti Monster or Pastafarianism.  The Flying Spaghetti Monster was created by Bobby Henderson in an open letter to the Kansas State Board of Education in which he parodied the concept of intelligent design.  After Henderson posted the letter on his website, it became an internet phenomenon and was featured in many large newspapers, which caught the attention of book publishers.  Released in March 2006 by Villard Books, "The Gospel" elaborates on Pastafarian beliefs established in the open letter. The Freedom From Religion Foundation (FFRF) is an American non-profit organization based in Madison, Wisconsin with members from all 50 states.  The largest national organization advocating for non-theists, FFRF promotes the separation of church and state and educates the public on matters relating to atheism, agnosticism, and nontheism.  The FFRF publishes a newspaper, "Freethought Today" 10 times a year.  Since 2006, as the Freethought Radio Network, FFRF has produced the "Freethought Radio" show. Apostacon (portmanteau of "apostate" + "conference"), before 2013 known as Midwest Humanist Conference, Midwest Humanist and Freethought Conference and Midwest Freethought Conference, is an annual event about atheism, freethought, humanism, secularism and skepticism in the (Midwestern) United States.  The conference, which embraces the parody religion of the Flying Spaghetti Monster, is aimed at "atheists, humanists, agnostics, skeptics, apostates, freethinkers, rationalists and pastafarians."
Answer: Flying Spaghetti Monster (FSM)