Continuity mistake: When Lois is talking about how amazing her singing was, in one shot Stewie disappears from his chair. (00:14:15)
Continuity mistake: When Lois starts crying in the supermarket, the boxes on the top shelf change colour between shots. (00:16:40)
Audio problem: When Peter goes down to the basement, the Pawtucket Patriot guy appears and Peter thinks he's coming on to him. He says, "Listen, I don't swing that way, pal. I got a date with my female wife, I just came down to get some beers." However, his lips very obviously do not sync up with those words.
Continuity mistake: While cooking dinner, and waiting for Peter, Lois has a watch on. As she comes down the basement stairs, it's suddenly gone.
Continuity mistake: When Peter is saying how he hated the last few years of MASH, Mr. Weed just appears behind him in a shot change. (00:01:35)
Continuity mistake: During the scene where Joe is putting his trophies on the shelf, the size of the shelf in relation to the trophies changes. (00:07:15)
Continuity mistake: When Joe arrives at the orphanage when he's telling his story, the sign changes position and the writing changes on it. (00:11:30)
Continuity mistake: When the Grinch drops the sack, the sack lands next to him, but in the next shot, it is gone. (00:11:45)
Continuity mistake: When Peter is improvising in the bank, the bag of money disappears in one shot. (00:17:30)
Continuity mistake: When the policeman asks Lois to describe Peter, it shows a view through a scope of a rifle. However, when the shot changes and the cop says "I've got him", there is no scope on the rifle. (00:18:15)
Continuity mistake: When Stewie is sitting on Lois's lap watching TV and Peter comes in, at first his book his blue then it is red. (00:02:25)
Other mistake: When Chris is telling Peter that he is out of the scouts, pink can be seen through his earring, even though his earring is in front of his blonde hair, not his skin. (00:06:30)
Continuity mistake: Just as Peter says "He-e-ey, don't take no for an answer Chris", the picture on the wall changes between shots. (00:06:35)
Continuity mistake: Peter picks up the phone to call the Scout leaders and points his finger up in the air. In the side shot, it's just his finger extended up, but when it cuts to a closer angle, suddenly his thumb is extended outward as well. (00:07:00)
Continuity mistake: When Lois is showing Stewie the tape in the car, the way she is holding it changes between shots. (00:07:30)
Continuity mistake: When Brian is sitting on the deckchair reading 'Utne Reader', the words 'Utne Reader' switch from being on the front cover, to the back cover, and then to the front again. (00:07:40)
Continuity mistake: When Brian is watching TV at first the remote is on the right hand side and there is an olive in his glass, but in the next shot the olive is gone and the remote in on the left hand side. (00:08:10)
Continuity mistake: In the car, Peter talks about how he shouldn't have had that prune smoothie. Suddenly their car has no rear window, and the ceiling of the car is completely different with lines going everywhere and extending back down over where the rear window used to be. (00:09:24)
Other mistake: When the family is driving to New York, another red car passes in front of them from the right where there is no road. (00:09:35)
Suggested correction: Usually this would be right, but it's evident by their positioning that Peter is actually driving his car right in the middle of the road on the dotted line and not staying in one lane. This is why the truck passes on the left to get in front and then the car on the right, both also getting centered on the dotted line.
Continuity mistake: When Lois is first using the slot machine, the symbols differ between shots. (00:11:00)
