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Continuity mistake: Todd and Margo are nearly two feet apart from each other as Margo suggests Todd slug Clark, but then they are much closer in the next shot when Margo leaves to perform the deed.

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Continuity mistake: While Clark is having his difficult conversation with Mary, the department store counter girl, the knot on his tie alternates between being cinched tight to loose around his collar.

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Continuity mistake: When Clark begins his rant about Mr. Shirley, Grandma Frances is directly behind Grandpa Art, with Rusty. The next shot of her and Rusty is almost standing next to Art.

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Continuity mistake: Before Clark goes off on his rant about his boss, Grandma Frances places her hand on Rusty's shoulder, but the next shot has her hand on the side of Rusty's head.

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Plot hole: When Bill and Clark are discussing the bonus delivery situation, it is December 21st, and Bill says his son received a delivery at his home via company courier. The bonus checks were to arrive to the employees before Christmas Eve, which would have given them plenty of time to contact each other that none of them got the bonus checks but did get enrollment in the Jelly of the Month Club.

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Continuity mistake: The RV of Eddie is parked near the end of Clark's driveway by the large tree in the yard when Clark illuminates his house. When the family disperses and heads into the house, the overhead shot now shows the RV is parked up against the Griswold's garage door, far away from the edge of the driveway.

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Continuity mistake: In the road rage scene with the redneck's pickup truck, the logging truck's trailer is passing the Griswolds' car with plenty of room for their car to fit underneath. However, the next shot before Clark steers under the truck's trailer shows the semi truck's cab just coming abreast of the Griswolds' car.

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Continuity mistake: As Clark is stapling the Christmas lights to the house, there are bits of snow and ice on his left-hand glove in the close-ups. But in the longer shots of Clark, the glove has no snow and ice present.

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Continuity mistake: In the department store as Clark is talking with Mary, the lingerie sales lady, his left arm is supporting him on the glass counter as he is standing. The next shot when Rusty approaches, Clark is now bent down with his left arm resting on the counter.

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Continuity mistake: After Clark dedicates the Griswold Family Christmas tree and it expands, Ellen's hands are on her hips, but the next quick shot of her shows her hands clasped behind her back.

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Continuity mistake: When Rocky runs out of the RV and stands in front of his mom, her mittened right hand is on his shoulder but in the next shot it's not.

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Continuity mistake: After Clark cuts the rope restraining the tree branches, Rusty is very close to the tree, but the final shot when Clark gives the "OK" sign shows Rusty about two feet from the branches.

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Continuity mistake: After the SWAT team busts into the Griswold's home and an officer yells "Freeze!", Clark's right arm changes position from either being raised or lowered as the scene quick cuts.

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Revealing mistake: When Snots the dog chases the squirrel into the Griswolds' dining room, he barely brushes a high-back dining chair that immediately falls on its side. If you look closely, a string attached to the the right side top of the chair can be seen tightening which then pulls the chair down.

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Continuity mistake: In the scene of Clark standing in the snow trying to figure out why his Christmas lights did not work, the paper he is holding in his right hand is mid torso to him, but in the next shot when Rusty leaves him, his right hand has instantly dropped to his side and he raises his paper-holding hand again.

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Continuity mistake: When Clark, Eddie, and Catherine are admiring the Christmas lights of the Griswold house, Clark is very close to Eddie with his left arm draped over Eddie's shoulder, but the next quick cut to Clark when he says, "Eddie?", shows Clark further away and his left arm at his side, and not stretched out.

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Revealing mistake: The stunt double for Nicholas Guest is obvious after Julia-Louis Dreyfus punches him. The hair style of the stunt double is different from Nicholas Guest's hair, which is heavily slicked back.

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Continuity mistake: In the Christmas dinner scene, closeups of Rocky show his right hand raised to his face, but the overhead shots do not.

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Continuity mistake: After Mr. Shirley tells Clark he will get a bonus plus twenty percent, Catherine, Rocky, and Ruby Sue cheer and get up from the couch to mingle with the relatives while Rusty and Audrey respond excitedly. There is a close up reaction shot of Clark as he begins falling, then a long shot of Clark falling to the floor as Catherine, Rocky, Ruby Sue, Audrey and Rusty are in their original positions on the couch, calmly watching Clark fall.

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Continuity mistake: After the tree burns, Rusty says, "Dad's gonna flip out." Clark Sr.'s left elbow is close to and behind Rusty's head, but in the next instant shot of Rusty, Ellen, and Audrey, Clark Sr.'s elbow is not there.

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