Continuity mistake: When Stewie and Bertram are parachuting down to Earth after the air strike, their parachutes get much closer to each other between shots. This occurs just before they start slapping each other.
Continuity mistake: Peter is playing poker with Lois's father, and he wins. Lois's dad wins. While he's bragging about his son-in-law, look at the table. All the chips and cards are gone.
From Method to Madness - S3-E18
Continuity mistake: When Simon is working with Stewie in his "The Life Cycle" exercise, there are three children behind him: a redhead with freckles, a blonde with glasses, and another blonde. However, after Simon turns around and says, "Any comments?", there is a wide pan of the kids in the class, and the three kids have completely disappeared.
Continuity mistake: When Peter is throwing the disks and then shooting them, you see the door is closed. In the next shot it is open and you can see the inside of the house. Then in the next shot, it is open again. (00:16:10)
The Kiss Seen Around the World - S3-E8
Continuity mistake: When Stewie has kidnapped that bully he holds a weapon in front of the bully's face. When Lois comes in he puts it down, but in a full shot of the room it has disappeared. (00:19:30)
Continuity mistake: When Meg is waiting for Lois outside the hooters, she has a watch on her wrist. When she is talking with Lois, it just disappears after a couple of shots and we don't see it again. (00:11:10)
A Very Special Family Guy Freakin' Christmas - S3-E16
Continuity mistake: When Joe is pretending to have broken his legs, Quagmire is holding Joe's wheelchair with both hands, but in the next shot, he is only holding it with one hand as he has a beer in the other hand. (00:05:45)
Chitty Chitty Death Bang - S1-E3
Continuity mistake: During the scene where Peter is taking Meg away from the cult group, in some shots he is wearing a watch and in others, he isn't. (00:18:40)
Continuity mistake: When Brian says "You can't just ignore these years", the front cover of his magazine is different from how it was in previous shots. (00:14:55)
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 Peter is improvising in the bank, the bag of money disappears in one shot. (00:17:30)
Continuity mistake: When Lois turns on her parents' bedside lamp, it only casts a small beam of light onto the floor, but later in that scene, the same beam of light is much bigger. (00:06:15)
And Then There Were Fewer - S9-E1
Continuity mistake: When Muriel Goldman dies, everyone gathers up around her. When that happens, you can see Tom Tacker and Meg in the background, although they both disappeared a few scenes earlier. And than when everyone gathers downstairs, they do a body count and discover Tom and Meg are missing and only then are they found.
Continuity mistake: When Stewie pushes Brian down the stairs, in the background at the moment he pushes him that the stairs are visible behind Stewie as well.
Blue Harvest - S6-E1
Continuity mistake: After Vader (Stewie) kills Obi-Wan, Luke yells out and then the shot shows storm troopers firing at him with Vader in the background. Vader's lightsaber is blue, when it should be red. It is red in the previous and next shots. (00:34:00)
He's Too Sexy for His Fat - S2-E17
Continuity mistake: Just before the pest control team leaves for the Griffins', we see the black team member holding a shotgun in his hand. After showing Logan in shot, it returns to the black member and he's now holding what looks to be an MP5 machine gun. In the following shot as he starts to slide down the pole, the gun is once again a shotgun.
The Father, The Son, and The Holy Fonz - S4-E18
Continuity mistake: When Francis arrives, he changes from standing on the threshold to standing inside the house, even though he could not have moved between shots. (00:01:30)
Continuity mistake: When Meg is looking through her magazine in one shot there are just some adverts, but in the next shot there is a full page picture of someone. (00:01:20)
And Then There Were Fewer - S9-E1
Continuity mistake: Derek and Jillian are standing beside Consuela who is holding a tray with 5 glasses of wine. A split second later, when Derek gets 2 off the tray, the tray is left empty.
Continuity mistake: The interior of the Griffins' bathroom changes color (from yellow to blue), when Chris first talks to his pimple.
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