- The original title for this episode was "Christmas".
- The current title of this episode refers to the Christmas carol of the same name.
- This is the final appearance of Phil Miller (II), due to his death from a botched appendectomy.
- Todd reveals he was in a hip-hop dance group in college called The Body Lockers.
- Kristen Schaal narrates the opening "Previously on The Last Man on Earth" for the first time, as opposed to Will Forte, who regularly says it.
- James McMaster and Tawny Daniels are the names of the dead corpses that Phil and Todd look at.
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