Continuity mistake: When Randy shows Mommy "how the piggies eat", the shots are obviously out of sequence. There are times when the amount of mashed potatoes on the plate greatly increases from the shot before. And watch the meat loaf a couple shots just before the scene ends. Three large pieces of meat loaf lie scattered on Randy's place mat, but they instantly disappear in the next wide shot.
Continuity mistake: When the delivery men are wheeling the "major award" into the doorway, it has a rope tied around it. As the camera angle moves inside the house, the rope is gone.
Continuity mistake: On Christmas morning when they open presents, the sleeves on the mother's robe move back and forth between rolled up and rolled down.
Continuity mistake: As Ms. Shields lectures the children on what happened to Flick, the phrase "the quick brown fox jumps over the lazy dog" is written on the blackboard behind her. But when she is done lecturing them, she turns around to reveal "A Theme: What I Want for Christmas" written there instead.
Continuity mistake: When the dogs steal the turkey and wreck the kitchen, there's a scene of the table broken and no pot holder is on the table. In the next scene, there is a pot holder sitting on the broken table.
Continuity mistake: When Randy is getting dressed for school, his mittens keep appearing and disappearing from his hands.
Continuity mistake: In the school classroom scene, the teacher writes "Silas" in cursive on the blackboard and very emphatically dots the "i" in Silas with her chalk. The dot is visible then and even in the long shot from the back of the classroom, however, in the next, more close-up shot, as the students are filing past her desk and handing in their fake buck teeth, there is no dot above the "i". (00:15:20)
Continuity mistake: In the second kitchen scene after Ralphie sits, the camera looks at the cellar door, where you hear the old man cussing up a "cloud of profanity that still hangs over Lake Michigan." The damper controls are sitting top to the left, bottom to the right. After the "accident" with the lamp, dad comes upstairs. The controls are now reversed, top to the right, bottom to the left.
Continuity mistake: In the living room scenes, on the mantel in front of the clock, lighted candles appear and disappear during the movie.
Continuity mistake: After Ralphie and Randy had gotten away from Farkus, Ralphie checks the mailbox for his decoder ring. After seeing that he was "skunked again", he closes the box, goes inside, and the camera pans to see Randy coming. If you look closely, the suit is totally free of any dusting of snow.