Continuity mistake: The colour of the ropes tying the ladders together changes from white to yellow. (00:11:00)
Factual error: There's no way for the Griffins to climb clear to the top of Mt Everest. It takes months to prepare for that and oxygen tanks. This episode is one whole factual error. That and it costs 30 grand or more per person.
Factual error: Quagmire spikes Brooks drink. She takes a drink and immediately passes out. The pill didn't even dissolve let alone get in her system long enough for her to pass out.
A Very Special Family Guy Freakin' Christmas - S3-E16
Continuity mistake: When Brian is in the kitchen with the oven fire and an empty fire extinguisher, the side door behind Brian has its door handle on the right side, but when the family returns and Lois opens that door, the handle is on the left side of the door.
A Very Special Family Guy Freakin' Christmas - S3-E16
Factual error: Brian touches the oven handle and gets burned. Not possible. Oven door handles do not get hot.
A Very Special Family Guy Freakin' Christmas - S3-E16
Factual error: A turkey does not burn and smoke 30 seconds after the oven timer goes off.
Petergeist - S4-E26
Continuity mistake: When the spirits first come out of the TV, notice the wall beside the TV. There's nothing there. Brian says who's here? Next shot shows a filing cabinet with a pink blanket on top.
Factual error: Joe's plan to trick OJ into confessing to the 1994 murders is moot since, having been acquitted, the double jeopardy provision would prevent him from being tried for the same crime twice, and as a cop, Joe would know that.
Suggested correction: The plan to get OJ to confess had nothing to do with getting the confession, so he could be arrested or tried again. And at this point, the civil trial already found OJ "responsible" for the murders. Since OJ has always maintained his innocence, getting a confession on tape would just be big news.
Continuity mistake: During the song number when Mr Weed arrives, Stewie has a solo part as he starts to backwards crawl up the stairs. In one shot, he climbs up to the third step, but when the camera changes angles he is only on the second step.
The Kiss Seen Around the World - S3-E8
Continuity mistake: When Meg is given the note in class by Neil saying "I Want You" the letters become much smaller in the second shot as she turns to look at him.
Continuity mistake: When Stewie is thrown from the swing and lands in another little girl's stroller, the inside is suddenly much larger after Stewie lands in it when the camera changes angles to how big it was when he was flying towards it. It suddenly has enough room for Stewie to be lying beside the girl with room to spare while she is still in the center, when it was barely big enough for her alone before he landed.
Ocean's Three and a Half - S7-E7
Factual error: There's no way that Joe and Susie wear the same size diapers.
Stewie, Chris & Brian's Excellent Adventure - S13-E7
Factual error: They all go back to 1912 in London. When Stewie gives a street performer money, Brian informs him that the person wasn't Charlie Chaplin but in fact, Adolf Hitler, and he was right. Back in 1912, Hitler was living in Vienna, Austria and was poor after failing to get into art school. He didn't actually leave the country until 1913 when he moved to Munich, Germany. (00:10:20)
Factual error: You cannot get paternity test results back in one day. It takes 3 to 5 days or even weeks depending on the lab.
Factual error: When Peter is sent back to 1984, he plans to see Zapped! in the theater with Lois; Zapped! was released in 1982, and was no longer in theaters by 1984.
Peter, Peter, Caviar Eater - S2-E1
Continuity mistake: Making his point to Peter, Brian smashes his Star Was glass on the floor which snaps Peter out of his stupor. The glass shattered into many pieces on the floor in front of Peter's chair. In the subsequent shots, the broken glass is nowhere to be seen on the floor. (00:18:02)
The Cleveland-Loretta Quagmire - S4-E5
Continuity mistake: During the cut away to Superman and the good trying to attack him, Superman is on a ledge around 5ft in height however this instantly becomes a mere step. (00:08:30)
Stewie Goes for a Drive - S10-E4
Other mistake: Stewie is standing up on the driver's seat yet he can drive a car normally. His feet don't touch the pedals so how is the car moving?