Continuity mistake: Quagmire and Meg are sitting on the couch. From out of nowhere he gives Meg a gift for her birthday. He came over empty handed.
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.
Factual error: A TV announcer says "We now return to True Blood", indicating a return from a commercial break. True Blood airs on HBO, which is a premium network that does not show commercials.
Continuity mistake: When Brian is with Stewie asking for help, we see a set of blocks on the table, including a set of 3 stacked up. In the next shot, the 3 blocks vanish.
Continuity mistake: The colour of the ropes tying the ladders together changes from white to yellow. (00:11:00)
Continuity mistake: At the top of the mountain, there are 3 string of flags attached to a pole. The shortest of which is 3 flags. Red, Blue, Yellow. However, after the shot zooms and comes back to the Griffins, the colours are now Blue, Red, Blue. The colours of a second string also change. (00:13:30)
Continuity mistake: When Peter and the family reach the top of Mt Everest, it shows a long shot of them all by themselves. Cut to Lois talking - another family is suddenly sitting there, and the woman says "we beat you by one hour and 11 minutes." (00:14:00)
Continuity mistake: Just as the Griffin's start down the mountain the flags disappear from behind them. (00:14:30)
Continuity mistake: Walking down the mountain Stewie is behind Brian. When he gets the scarf out however, he is side by side with Brian. (00:15:10)
Continuity mistake: When walking down the mountain, in the long shots, there are footprints between Brian and Stewie. But in the close up there isn't any. (00:17:00)
Continuity mistake: Peter rescues the Fishmans. When the family pulls him up he's holding both of them under one arm and has a huge rock that came from nowhere under the other arm. (00:19:50)
Other mistake: When Peter was rescuing the Fishmans he totally missed grabbing the woman's hand but she didn't fall. (00:19:50)
Other mistake: When the family gets to the top of the mountain Brian goes left off-screen to pee. Lois says "we proved we aren't second best." Wideshot shows the Fishmans sitting there. They would've all seen them when they got there, yet they are shocked when Ross says "Well look who finally got here." And they are only inches apart.
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.
Yug Ylimaf - S11-E4
Continuity mistake: The damage to the bedroom wall changes from when they hit the wall to when they wake up. (00:05:30)
Yug Ylimaf - S11-E4
Continuity mistake: When Stewie and Brian are thrown into the wall the debris on the floor around them changes when they come to. (00:05:30)
Yug Ylimaf - S11-E4
Deliberate mistake: The time machine reverting causes everything in life to go backwards. However, although the characters' actions are reversed, their dialogue is always spoken forwards and not backwards. (00:08:00)
Yug Ylimaf - S11-E4
Other mistake: Everything goes backwards in time and goes that far back that Meg (who is voiced by Mila Kunis) goes back to being voiced by Lacey Chabert (who voiced Meg in season 1). However, when Lacey Chabert does her line to Stewie being in the Griffin house for the first time, it goes back to Mila Kunis when Stewie is "reborn". However, if everything was going backwards and Brian fixed everything to make it goes forwards again, then it still should have been Lacey Chabert voicing Meg, not Mila Kunis. (00:16:30 - 00:19:35)
Yug Ylimaf - S11-E4
Continuity mistake: When Stewie is born whilst time is reverting, Doctor Hartman says "It's a girl... with a penis and no vagina". Then after Brian restored the flow of time and Stewie is actually born, Doctor Hartman instead says "It's a boy". (00:18:25 - 00:19:55)
Yug Ylimaf - S11-E4
Factual error: Near the end when Stewie is being put back and out of Lois's womb, he has no umbilical cord attached to him.
