Something, Something, Something, Dark Side - S8-E20
Continuity mistake: Dak sits in the back of the snowspeeder and says "Right now, I feel like I could take on the whole empire myself" so Luke gets out. Dak is in back when he flies out but when he is in space he is now sitting in the front.
Continuity mistake: When Lois bends down to pick up the CD off the floor in Chris' room, the items around the shirt on the floor change between shots. (00:16:20)
Continuity mistake: When Stewie is talking to the army recruiter, there is 2 stacks of paper on the desk. When he signs up, one of the stacks has disappeared. (00:07:10)
Continuity mistake: At the start, Chris is sat next to Peter at the table with a visible gap between him and Meg. When Lois stands up, Chris is not closer to Meg as the gap has disappeared. (00:02:20)
Continuity mistake: When Chris is saying about the Army being awesome, there is nothing green on his plate. When the shot changes, something green has appeared on his plate. (00:01:20)
Continuity mistake: When Meg gets promoted, there is a gap in the books on the shelf. When she stands up, the gap is gone. (00:18:30)
Continuity mistake: When Stewie keeps saying "mum", he's not stood next to a rug. When the shot changes, a blue rug has appeared next to Stewie. (00:11:40)
Continuity mistake: When Peter says about suing Dr. Hartman, Lois is holding Stewie who is asleep and facing Peter. When the shot changes, Stewie is now looking towards Brian. (00:08:20)
Continuity mistake: When Peter is playing with Stewie's nose, Stewie's arms are by his side, but when the shot changes, he's got his arms in front of him. (00:08:10)
Continuity mistake: When Peter is going for ice cream, his fork simply disappears from his plate. (00:18:40)
Continuity mistake: When Lois is carrying Stewie down the stairs, the brick patterns in the wall change between the wide shot and the close-ups. (00:14:10)
Continuity mistake: Lois' breasts grow in size when Peter is trying to get Quagmire to snap out of his trance.
Continuity mistake: Stewie floats over to Chris sleeping on the couch. Next shot shows Stewie getting tangled in the ceiling fan although there wasn't ever one in the living room.
Ready, Willing, and Disabled - S3-E15
Continuity mistake: Chris takes Meg's purse and throws it to Stewie to go through. He throws items on the floor, and when Meg takes her purse back, the items on the floor are not there.
Plot hole: They're in the Clam complaining that they can't drink when they make the revelation that Brian can because he's technically 56. But Quagmire should be able to drink, as in a much earlier episode, he's revealed to be over 60.
Suggested correction: Quagmire considers the rest of them to be his best friends. He isn't drinking because they can't drink. He is complaining because since his friends can't drink - he won't drink, so he is still pissed.
It's still a plot hole considering Quagmire's age. I think the writers messed up big time.
You make a good point, but it's awkward to be that one person who is drinking while surrounded by people who can't. So, I understand the correction that was submitted above. Because his friends are not drinking, he now feels that he can't.
Plot hole: Stewie gets out of the car seat and goes back to bed, leaving the blanket at the bottom of the seat. When they get to New York, Lois goes to get him out and realises he's gone. But when they started the trip the blanket was covering the entire seat to make it look like Stewie was still in it. So who ever "covered" him up knew he wasn't in the seat before they set off. (00:13:45)
Continuity mistake: After getting the uranium, Stewie places it in the time pad and then puts the pad in his jacket pocket. After being confronted by Hitler who promises to spare them if they sing a musical number, Mort interrupts them, and it's seen that he is now standing on the time pad.
And Then There Were Fewer - S9-E1
Continuity mistake: When everyone is in the dining room at the dinner table, the order of where everyone sits changes between shots. In all moments where it shows everyone sitting, the order is Priscilla, Derek, Jillian, Mort, Muriel, and Carl. But in one shot, the order is Priscilla, Derek, Jillian, Muriel, Mort, Carl.
Factual error: The family stays briefly in a British apartment, however the plug sockets displayed are US standard, not UK.
Continuity mistake: Lois and Meg take the red car for their vacation at the spa, but while they are gone, Peter is seen driving it a few times. (00:08:00)