Corrected entry: When the family are at the school play, Brian suggests that it's possibly too soon for a musical about the tragic story of Terri Schaivo, implying that it's the first time the play has been done. However, Stewie (who is playing an electrical plug) meets Jared, who has been the plug every year for three years.
Road to the Multiverse - S8-E1
Corrected entry: When Brian and Stewie are in the universe without religion, Brian asks what happened to the art of the Renaissance and they go to the Sistine Chapel to see that John Hinkley decorated the ceiling. Why is there a Sistine Chapel in a world with no religion?
Correction: It's not a world with no religion whatsoever; Stewie simply described it as a world without Christianity. The Sistine Chapel could still exist, but not necessarily as a building with any religious significance, or possibly representing a different faith.
Correction: It's highly unlikely Brian keeps track of what play the young elementary students are putting on. This is Stewie's first year of involvement and therefore Brian's first year of awareness. He's making the observation for the first time because he just found out about the play for the first time.
Phixius ★