

Manger Things/References
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Cultural references
- The name of the episode is a reference to the TV series Stranger Things.
- Marge mentions the Oscars, Tom Brady and the Super Bowl.
- Mr. Burns mentions the It's a Wonderful Life film, with Burns saying his favorite character is Mr. Potter, the banker who ruins Christmas Eve.
- The carolers sing "Hark! The Herald Angels Sing", while Homer mocks Burns with it. The carolers also sing "Good King Wenceslas".
- Homer and Marge ride on a Toyota Prius (XW20) as a Uber car, driven by Raphael.
- Homer and Marge ride on a Uber Toyota Prius (XW20) car, while the Uber sad driver rides on a Toyota Camry (XV30).
- Homer references the "There once was a man from Nantucket" limerick.
- The painting The Garden of Earthly Delights is seen and Homer has hallucinations of it.
- Gil Gunderson mentions being dishonorably discharged from The Salvation Army.
- The book One Fish, Two Fish, No More New Fish is a parody of Dr. Seuss' book One Fish, Two Fish, Red Fish, Blue Fish.
- "Silent Night" plays when Homer goes into the secret room.
- "Carol of the Bells" plays in the decoration montage and during the ending credits.
- The family from The Borrowers and a paper with "Bitcoin passwords do not lose" written on it is seen in the vent.
- "O Holy Night" plays before the cookies scene.
- Homer searches how to deliver a baby on MyTube, after mentioning YouTube. An ad for "How to be a sidekick with Sideshow Mel" shows before the video.
- Homer says he redeemed himself at Christmas like the Grinch, John McClane (as the Die Hard guy), and Scrooged.
Trivia
- Todd is born in the flashback in this episode, despite Lisa already being born. This is different from "Lisa's First Word", where Todd was born before Lisa.
- Bart wrote El Barto on the snow on top of the house roof.
- The Christmas stockings get progressively smaller and worse, with Maggie only having a paper bag with "Baby" written on it.
- The guy with big hand is seen at the Power Plant before his hand got big.
- More Hounds names are revealed: Slasher, Gasher, Mangey, Nips 'Em, Stalker, Vicious, Rabid and Rips 'Em.
- The booth Homer sits in at Moe's Tavern is the Dr. Marvin Monroe Memorial Booth.
- Things seen in the vent: a rat, a coin, the books How To Get Your Baby Off Her Pacifier and How To Clean Your Vents, the family from The Borrowers, and a paper with "Bitcoin passwords do not lose" written on it.
The picture of a full-grown Bart and Lisa with Maggie is visible along the staircase wall.
- One of the promotional images for this episode have a photo showing a 10-year old Bart, a 8-year old Lisa and Maggie is visible in the background, though Bart is 4 years old, Lisa is 2 years old and Maggie is still unborn. The goof was fixed on the aired episode being replaced by a picture of Grampa and Bart wearing hats.
Continuity
Goofs
- Smitty has yellow skin rather than black skin.
- Sideshow Mel is shown as Krusty's sidekick. This is an continuity error; Sideshow Bob is shown to be Krusty's sidekick is past scenes in various episodes, including Lisa's Sax, along with the fact that he was replaced by Mel after framing Krusty for armed robbery in the present day events of the show (season 1's "Krusty Gets Busted"). Mel becomes Krusty's newest sideshow in between "Krusty Gets Busted" and season 3's "Black Widower", while the main events of this episode are six years into the past.