• This episode's title is a reference to the show of the same name and the actual theory.
  • The priest delivering the letter is a reference to Back to the Future Part II, when Marty McFly receives a letter from a Western Union courier, sent by Dr. Emmett Brown 70 years earlier.
  • When Stewie says "Check out the big brain on Brian!", it is a reference to the film Pulp Fiction.

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