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Continuity: On Junior's first day of school he walks into school empty-handed but from the hallway on he has a bagged lunch.
Revealing mistakes: When everybody on the Crazy Dance vomits, it is obvious that the liquid is not issuing from the people's mouths but from a point behind them.
Continuity: When Junior, Trixie, and their parents get their picture taken at the pizza parlor, everyone smiles except for Trixie. Later, when Ben takes a look at the picture, Trixie is smiling.
Continuity: When Lawanda approaches the meteorite, she holds her left arm to stop it. In the next shot it's her right arm, then back to her left.
Revealing mistakes: After Trixie is shown close up driving a bulldozer during the wedding scene, a wide shot shows that an adult is driving instead.
Factual errors: When Junior sets the Crazy Dance on the highest speed, there is ample evidence that the Crazy Dance's rotational speed has increased while the centrifugal force has decreased. This is a physical impossibility.
Continuity: When Ben is standing on the bridge watching the truck drive away with his wife in the back, he has the rifle in his hand. Ben and Junior turn around to walk back to the car and the rifle disappears. It seems unlikely he would have left it laying on the bridge.
Revealing mistakes: Obvious fake cat when the cat jumps on the Grandfather and his Grandfather falls down the stairs.
Continuity: When Junior's dad is about to spank him in his room, the position of the globe on his bed changes.