

Manger Things/References
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Cultural references
- The name of the episode is a reference to the TV series Stranger Things; however, the episode is not a parody of it.
- Marge mentions the Oscars, Tom Brady and the Super Bowl.
- Mr. Burns mentions the "It's a Wonderful Life" film.
- Homer and Marge ride on a Toyota Prius (XW20) as a Uber car, driven by Raphael.
- The painting The Garden of Earthly Delights is seen and Homer has allucinations of it.
- The carolers sing "Hark! The Herald Angels Sing", while Homer mocks Burns with it.
- Homer and Marge ride a Toyota Prius (XW20) as a rideshare car.
- The book "One Fish, Two Fish, No More New Fish" is a parody of Dr. Seuss' "One Fish, Two Fish, Red Fish, Blue Fish".
- Carol of the Bells plays in the decoration montage.
- A paper with "Bitcoin passwords do not lose" 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
- Bart wrote El Barto on the snow on top of the house roof.
- More Hounds names are revealed: Slasher, Gasher, Mangey, Nips 'Em, Stalker, Vicious, Rabid and Rips 'Em.
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 6 years old, Lisa is 4 years old and Maggie is still unborn. The goof was corrected on the aired episode.
Goofs
- Todd is a fetus despite being born and entertaining Bart while Lisa was born.
Continuity