- Action Mom: Marge in Lisa's story. She is called to serve in the US Army during World War II instead of Homer, and successfully kills Hitler.
- All Just a Dream: All four stories of this episode.
- Be Careful What You Wish For: When Bart wished Mr. Burns wouldn't sing "12 Days of Christmas", Burns said he'd sing the "original" version with 39 days.
- Dirty Coward: When Marge shows up at the movie theater to kill Hitler, he rips off his mustache and puts it on another man's face as a failed attempt to avoid being killed.
- Getting Crap Past the Radar: The Stinger, wherein a muppet version of Moe tries to kiss Katy Perry.Moe: I'll just kiss your belly button! (promptly kisses her "belly button")
Katy Perry: That's not my belly button! (beat) But I didn't say stop...
- No Budget: So much was spent to have Katy Perry appear there was only one hound to answer Mr. Burns' usual "release the hounds" command.
- Shout-Out: Mr. Burns decided to visit the Simpsons because he was visited by three spirits.
- Tempting Fate: When the Simpsons were about to depart for Hawaii, Homer said nothing would stop them. Mr. Burns then showed up.