Continuity mistake: When they show the two new dogs, they are both standing, in the next shot, one is seen sitting down and the other one is already sitting.
Revealing mistake: When Cam punches the dog, you can tell that the footage was sped up.
Factual error: The film opens with a quote; "War has rules, mud wrestling has rules...politics has no rules - Ross Perot, presidential candidate 1988." Perot was a presidential candidate in 1992 and 1996, and 1988 can't refer just to the sentence either, because that quote is from 1996 as well. (00:00:40)
Continuity mistake: Cam is showing a presentation that ridicules Marty. At the point when he mentions the "Curves" gym, there is a reaction shot on Marty, and he is not wearing the napkin that he has on his neck in all the rest of the scene. (00:22:40)
Continuity mistake: When one of Marty's sons confesses the goat licking story, Zach Galifianakis is holding his right hand on top of the left. The hands are switched when his wife says "Now honey, you promised you wouldn't get mad." (00:09:15)
Continuity mistake: In the baby-punching scene, the mom's facial expression keeps changing between shots. (00:31:40)
Continuity mistake: When Cam is filming himself having sex with Mitsy, the timer on his phone changes between scenes: at first the timer is a few minutes into filming, but then the time reduces.
Continuity mistake: When Mitzi comes into the office to apologize, the background changes slightly throughout the shots. The blinds and door change position and the writing on the whiteboard is different.
Other mistake: Cam says he ran for fifth grade class president on a platform of getting rid of a dangerous playground slide. Marty later says he voted for him, but that he was in fourth grade at the time, which would have made him ineligible to vote.
