These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: A Christmas Story
Adaptation Displacement: Shepherd left behind a vast body of other work about his childhood, but only diehard fans are even aware of it, or of his long career as a radio personality.
Ensemble Darkhorse: What do you remember and love most about this film? The leg lamp? The bunny suit? The tongue on the flagpole? Nope, you probably remember the delightfully Large Ham that is the Old Man.
It Gets Better: First ten minutes are forgettable and pretty slow, with long gaps in the narration and very long shots of toys and kids pressing their noses against windows.
The "Soap poisoning" scene is already hilarious, but it's even more so if you're familiar with Modern Warfare.
Memetic Mutation: "You'll shoot your eye out!", "FRAH-GEE-LEY. Must be Italian.", "Drink More Ovaltine", etc.
Opinion Myopia: If you didn't grow up with this movie, and even remotely imply you don't like it, expect 1.) the fan's heads to explode at the mere thought of someone not adoring this classic, and 2.) rip you to shreds for it.
Sequelitis: The 2012 DTV sequel has been widely panned.
Special Effect Failure: When the Old Man gets home exclaiming that he had won the contest, he slams one of the Bumpass hound's tails in the door. The "tail" is pretty obviously a piece of fabric folded over once, and sliding around the door seam as if it could be pulled through just fine.
Weird Al Effect: If someone brings up Ovaltine nowadays, it will most likely be because they remembered it from this movie.
Values Dissonance: Christmas dinner at the Chinese restaurant... let's just say this scene hasn't exactly aged well.