- 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.
Previous Episode's References /// The Big Bang Theory's References \\\ Next Episode's References