And Then There Were Fewer - S9-E1
Continuity mistake: When Lois and Peter pack their suitcases and leave the room, as Lois walks down the hall she stops at Diane's open door. In this first shot from the hall there are double doors and a blank wall opposite Diane's open door, but in the next shot from inside Diane's room there's a painting hanging on the wall opposite her door. (00:39:55)
And Then There Were Fewer - S9-E1
Continuity mistake: When Peter and Lois are packing their suitcases, in the first shot Lois is removing things from the dresser's wide middle drawer, but as Peter and Lois walk out of their room that wide drawer has been replaced with two small drawers in the middle. (00:39:30)
And Then There Were Fewer - S9-E1
Continuity mistake: In numerous shots we see the interior layout of the dining room, with the four sets of two story windows behind the arm chair at the head of the table. After Tom is accused of being the murderer, when he's captured in the dining room they're all behind the arm chair as they crack a joke about Adrien Brody. The problem occurs as the shot pulls backwards through the window, which is an average bay window instead of the four sets of two story windows. (00:37:35)
The Man with Two Brians - S7-E5
Other mistake: Brian puts in a video tape of him as a puppy. But he hasn't been with the Griffins since he was a puppy. Peter picked him up from the street as a homeless adult dog.
Continuity mistake: In the principal's office, when everyone's talking about how Chris sent an inappropriate picture, Joe is there. After Joe says "This makes Chris a sex offender", he's got a relatively pointed nose. In the wide shot his nose is rounded.
Continuity mistake: When the fat guys arrive at Peter's group, pay attention to the Asian guy in the first seat third row. After they open snacks he has switched seats with the other guy in the first seat second row. The guy he swapped seats with hair also changes color. (00:12:40)
The New Adventures of Old Tom - S14-E18
Continuity mistake: In the beginning of the episode the sign says "Every B deserves a J" underneath the sign of Jason's Jewelry but when Brian and Stewie go to return it that wording is gone.
A Very Special Family Guy Freakin' Christmas - S3-E16
Continuity mistake: In the beginning of the episode with everyone at the town tree, initially Lois' pants are red, in the same scene moments later they are tan, and seconds later they're red again. (00:01:05)
Continuity mistake: When Lois goes to the bedroom, she opens the door and trips the wire across the door. The wire is strung across the bottom of the door but when she turns the light on, it has disappeared.
Continuity mistake: When we first see Kate and her parents at the restaurant there are only 2 empty chairs. Stewie then sits in the chair next to Kate. After Kate's parents ask what happened, we see a chair in between Stewie and Kate, but you can also see the edge of third empty chair. A plate and the wine filled glass also move.
Screams of Silence: The Story of Brenda Q - S10-E3
Continuity mistake: When Lois and Brenda are out eating, Lois closes her menu when the waiter comes by. But the next shot of her menu it's open when we don't see her touch it.
When You Wish Upon a Weinstein - S3-E22
Continuity mistake: When Max hangs up the phone, the transmitter (the part you speak into that's nearest the cord) is on the right. A few shots later when we see the phone again, it's on the left side.
Brian Goes Back to College - S4-E15
Continuity mistake: Brian stands outside of the gates of Brown University. The girl entering next to him has a backpack with a top flap that changes from brown to yellow and back. (00:08:05)
Petergeist - S4-E26
Continuity mistake: The table with the TV on in Peter and Lois' room is just a small table at the beginning of the episode when Stewie talks to the poltergeist. But as they speak to Stewie in the TV it's on a high up chest of drawers. (00:08:00 - 00:12:00)
Chitty Chitty Death Bang - S1-E3
Continuity mistake: After Lois says, "When Meg and Chris turned one I missed everything," it flashes back to Lois writing 'happy birthday Meg' on the cake, and there's wallpaper border at the top of the walls, but when Peter asks her what she's doing in the kitchen the wallpaper border is gone. The paper cups that Lois filled with punch also vanish, and the rolling pin, board, etc. suddenly appear. (00:11:30)
And Then There Were Fewer - S9-E1
Continuity mistake: When Joe is beside the cabinet with the dishes on it, you see there is no bullet hole in any of the plates. One falls off, Joe picks it up and suddenly there's a bullet hole in it.
Audio problem: When Peter is telling the guys about the doctor visit, he starts crying and knocks his beer glass off the table. It makes the sound of glass shattering, but the glass on the floor isn't broken at all.
Revealing mistake: When Brian tells Brooke "I understand", after he thought he was being rejected, his left ear disappears for a single frame.
Revealing mistake: When Peter runs across the dock after getting out of the boat, a large chunk of his body is missing.
Answer: Mort is Jewish, and Walt Disney was said to be antisemitic. So it would make sense in a Disney universe all the inhabitants would share his supposed beliefs.
MasterOfAll