The Bible
The Bible was written by God as a merchandising tie-in to His blockbuster film "The Ten Commandments." Each book of the Bible is named after a person who features prominently in it, for example, the Book of Numbers, which is named after Herschel Numbers, who invented numerals. The Bible was so successful that God wrote a sequel, "Bible II: On to Rome," now generally called "The New Testament." Protestants believe the Bible is literal and exactly true in every detail except the description of the Eucharist, while Catholics are not allowed to read the Bible.
Catholics
Catholics are the New York Yankees of Christianity. They are the biggest and wealthiest team, and their owner is intensely controversial (this makes St. Francis of Assisi the Derek Jeter of Catholicism: discuss). Catholics all wear matching uniforms, and are divided into "parishes," or "squadrons," to make choosing softball teams easier. Catholics are rigidly controlled by a hidebound hierarchy that starts with priests and ends with priests' housekeepers. Catholics are not allowed to read the Bible, eat meat, or refrain from worshipping statues.
The Protestant Reformation
This is the name historians give to a major labor dispute that erupted in Germany in 1517 when a group of monks hammered a proposed union contract to the door of the pope's house, requesting a 95 percent pay raise. The pope refused to negotiate with the monks union until it agreed to pay to have the door fixed, and the result was the world's longest-running strike. For nearly 500 years, a huge portion of Christians have been on strike from being Catholic, saying they are "justified" in their work stoppage because the pope won't expand the number of indulgences they get per year. Currently, the matter is in arbitration.
Calvinism
This theory was worked out by the French theologian and fashion designer John Calvin Klein, who argued that some people are predestined to be glamorous while others are doomed to be plain. America was founded by Calvinists, who sought to establish a country where they could pursue their belief that buckled hats were fashionable.
The Nicene Creed
This statement of faith is the Christian Pledge of Allegiance, recited every Sunday in squadron meetings by Christians all over the globe. Adopted in the 4th century at the behest of Emperor Constantinople, it was designed to counter the influence of the Aryans, who argued that Jesus was German.
Heaven
Heaven is a term referring to the ultimate destiny of a certain number of souls. Depending on who you listen to, heaven is either: where all of us will end up (Origen); where many of us will end up (St. Gregory of Nyssa); where some of us will end up (John Calvin); where a small portion of us have, in some sense, already ended up (John of Leyden); where precisely 144,000 of us will end up (Charles Taze Russell); or where Jack Chick will end up (Jack Chick). Theologian Belinda Carlisle once posited that "Ooh, baby, heaven is a place on earth," but explorers combing the globe have yet to confirm this.
Go and read the rest. So now you know!