Corrected entry: The outside of the Byrnes home in this sequel is different from the home in "Meet The Parents". In the first movie, there are dormer windows on the second floor. In the sequel, the front of the house looks completely different with no dormer windows.
Corrected entry: After the party, when Bernard is lying under the motor home, Jack honks the horn and it does not fully play its music. That cannot be possible.
Corrected entry: When the family is eating at the dinner table, Jack goes on about the reason he uses things like baby monitors and then there is silence. Just before Gregg says, "he's right" look at Bernard Focker's face, he is obviously about to burst out laughing.
Corrected entry: When Jack is about to get out of the shower and he sees Moses and Bernie also in the bathroom and Bernie is sitting on the toilet. If you look at Jack, you can see the dark bathing suit he is wearing.
Corrected entry: In the scene where Greg gets shot by the taser, there is a shot of the officer and Greg is on the floor, but the cord that is supposedly connected to Greg is very easily seen running off screen in the opposite direction to Greg. Then in the next shot it is running towards Greg.
Corrected entry: When the "Wall of Gaylord" is revealed and everyone heads out to the the lagoon, Greg is left standing and looking at the shrine. On one of the awards his name is noted as "Gaylorck Focker" instead of "Gaylord".
Corrected entry: When Greg's dad lies down in front of the bus, to stop Mr. Byrnes from leaving, he calls his son Ben, instead of Greg or Gaylord.
Corrected entry: In the scene in which a big deal is made that the baby's "first word" is an obscenity. This isn't his first word, though. Much earlier in the movie when the housekeeper, Isabelle, appears during the fondue dinner the baby says "mama" while reaching for her breasts. Everyone around the table is watching the baby as he does this, but all fail to notice that he spoke.
Corrected entry: After awaking from the truth serum episode, Greg has a note pinned to his shirt showing the "circle of trust" and a dot representing Greg outside of it. When Greg removes the note and looks at it, the dot is significantly closer to the circle.
Corrected entry: The hair Jack pulls from Gaylord's co-captain hat is much too long to have come from Gaylord's head.
Corrected entry: When Jack Byrnes places the tiny spy camera in the mouth of the toy alligator, he sets it back far enough that the teeth partially block the view through the lens. He is immediately seen from the spy camera's perspective wiping the lens clean. It would have been necessary to open the alligator's mouth for access but the teeth stay in view without moving.
Corrected entry: When Mr. Jinx uses the toilet and flushes it, Dina says that Jack installed a special device for the cat which is a button. Then when Jinx releases L.J. from his pen, he flicks that little device, which resembles a common toilet flush. If Jinx could have done that, why couldn't he just use a normal flush?
Corrected entry: Jack (De Niro) is super-suspicious and likely to be aware of all the facts about everything that affects his family, yet he did not know that Greg's mother was a sex therapist. Surely once he knew his daughter was to marry into the Focker family, he would have looked into the family's background.Mad Ade
Corrected entry: During the scene where the Focker's are driving to the Byrne's family, another vehicle full of women are driving past. On the side of their vehicle, it says "hoot if your horny". This is a grammatical error. The 'your' should actually be spelled 'you're' as in 'you are'.
Corrected entry: When Jack is threatening Gay with the truth serum syringe, the content in it varies between shots: when the camera looks at Gay, the syringe is empty; when it looks to Jack, the syringe is full.
Corrected entry: Sodium pentathol, the truth serum given to Gaylord, renders the drugged person in an unconscious, trance-like state. Gaylord would not have been able to walk around and function relatively normally as shown in the film.
Corrected entry: When Gay is given truth serum, why does he then profess that he has a son with Isabella, if the truth is that he does not know anything about this?
Corrected entry: After Jack injects Gaylord with the truth serum, he tells him that Gaylord will have no memory of it. The next morning, Gaylord and Pam are talking about what happened and Gaylord cannot remember. Not long after, as the whole family confronts Jack as he's leaving, Deena pulls the bottle of truth serum out and tells how Jack gave it to Gaylord. Suddenly, Gaylord makes some comment about how Jack gave it to him, implying that he remembered the event.
Corrected entry: The hair Jack collected from Greg's hat would have been useless for DNA comparison - it had no follicle.
Corrected entry: When Pam and Greg announce that they want to move the wedding to June, Pam says directly after that "I've always wanted a spring wedding". June is a summer month (Spring is March, April, May).
Corrected entry: When Greg throws the brick into the RV it bounces off and shatters the windshield. But when the camera zooms out in the next shot it looks as though nothing happened.
Corrected entry: The morning after Greg has the truth serum, he wakes up and his dad is still in bed. He walks downstairs and finds his dad outside.
Corrected entry: Greg goes to investigate his parents' whipped cream antics in the bedroom. When he enters the room, Bernie Focker has whipped cream on his face, Roz Focker has it on her chest, and then she places a towel on top of her chest. In the next shot, the whipped cream is gone from both, his face and her chest, and no one wiped it off.