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Revealing mistake: After the mother sees giant Adam and faints, Wayne is replaced with a doll with chubby rubber arms.

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Continuity mistake: Nick and Wayne walk towards the giant baby for the first time, next to where a clock is. In the wide shot following, they're two metres behind, walking towards that same spot.

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Revealing mistake: When Wayne and Nick stare at the giant baby entering the room (a superimposed projection), they keep staring ahead for a couple of seconds despite the baby already having turned right. The cue to where to watch failed.

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Continuity mistake: In Las Vegas, when the ice-cream truck is about to play the music, the position of the baby's feet, the lettering on the billboards and the people next to him change completely between shots.

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Continuity mistake: When Adam is toying with the car in Las Vegas, the wide shot shows the girl's arms extended, but in the close-up they're covering her face. This swaps back and forth.

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Revealing mistake: When Mandy is hanging loose by the car's edge and Nick is grabbing her, there's a shot with a bluescreened background where Nick says "but you gotta help" where Mandy and the car are all blurry and faded and the image is doubled. Something went really wrong in that special effects shot.

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Revealing mistake: After Adam passes the car by the palm tree, when he slides it and makes sparks, Nick's hands are not real but from an obvious miniature.

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Revealing mistake: When Adam falls face-front in Vegas one can notice that Nick and Mandy have been replaced with two stiff toys.

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Continuity mistake: In Las Vegas Adam slides the car and sparks come out. His brother is either holding the wheel or waving his arms, depending on the shot.

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Continuity mistake: When Wayne is on top of the giant bunny holding the bullhorn he is in front of the bunny's hair in the close-ups, but hidden behind it in the angles where the baby holds the toy (though the bullhorn is still visible), obviously to hide the miniature-Wayne trick.

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Revealing mistake: After the giant baby grabs the giant bunny he then grabs his dad's head and the baby is replaced by an obvious inflatable doll.

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Continuity mistake: The chocolate stain on the baby's face when home behind the net changes from dark to light between shots.

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Audio problem: In Las Vegas, before the yellow car scene Nick says "we have to jump", but his mouth isn't moving.

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Continuity mistake: Adam picks up the yellow car sideways but the shot inside shows Nick and Mandy upside down.

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Visible crew/equipment: Stage light is reflected on a glass door when the family chases the giant baby inside the house.

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Continuity mistake: When Nick and his dad walk to the kitchen to see what happened with the baby, Nick leaves the newspaper sideways on the table. He and his dad run back screaming and hide behind the couch. Angle changes and the newspaper is now placed perfectly straight.

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Continuity mistake: Before the microwave waves hit the baby, the yellow bowl on his table keeps changing positions all the time.

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Trivia: When Wayne and Diane are looking for the machine in the lab's storage room, the box next to her has "Ark of the Covenant - Top Secret" written on it.

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Continuity mistake: After Wayne and Diane crash through the storage door, several metal parts get stuck on the van's roof. During all the escape, the parts keep falling and re-appearing back on the roof.

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Continuity mistake: When the mother and daughter are about to get inside the cab, two joggers pass by in the background. There's a shot of the father and son chatting for a long while, and when the angle goes back to the women, the joggers are on the same spot as before, instead of several meters away.

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