Corrected entry: When Peter enters Chris' room and accidentally thinks Chris is Lois, he quickly stands up and tries to change the mood by asking Chris questions, one of which is, "Did you do your homework today?" Chris nods his head yes, and Peter comprehends, despite the fact that he is blind.
Corrected entry: During this episode, Chris still goes to Buddy Cianci Jr. High, but the teacher who catches him with the vodka was seen in the episode "Let's Go to the Hop" as a teacher from Meg's school, James Woods High.
Correction: There are several possible explanations to this, the most likely one that the teacher had simply switched schools. Maybe he got a new job, or maybe he was a substitute who filled different positions at different times.
The Courtship of Stewie's Father - S4-E16
Corrected entry: When Peter is driving Stewie to Disneyland, the scenery flashing past the windows is just the same few trees over and over. (00:13:25)
Correction: This is a very common technique used in animation to save the animators time and effort. It can't really be classified as a mistake.
Jungle Love - S4-E13
Corrected entry: Stewie goes to the airport after seeing a bad film; he puts his shoes through the tray and walks through the detector. He keeps walking and doesn't pick up his shoes but moments later on the plane, they are back on.
Correction: It's not moments later; you don't board the plane immediately after going through the security checkpoint. Stewie obviously realized that he was missing his shoes and went back to get them, in the time that passed while he was waiting to board the plane.
Brian Goes Back to College - S4-E15
Corrected entry: If you look at the handicapped teacher in the wheelchair, you can see that the keyboard on his wheelchair's arm only has four rows of five buttons, making twenty in all - not enough for every letter of the alphabet.
Correction: Maybe there are only twenty or so keys to save space. On many PDA keyboards there are special buttons you can hold (i.e. Ctrl, Alt) that allow you to access another keyboard (maybe there are 2 symbols on each key). A full size keyboard would take up a lot of space on a wheel chair.
The Father, The Son, and The Holy Fonz - S4-E18
Corrected entry: Catholic baptism does not involve total immersion.
Correction: This is a character mistake at best. Peter's father is a bit more extreme than most (after all he has called the Pope "soft") and since he's in a hurry to Get Stewie baptized he makes a mistake. Besides a baptizing done by a layperson would usually require that a priest performs a conditional baptizing at a later point, so even if he did it wrong it would still be valid if the intention was to have it redone by a priest later.
Corrected entry: In this episode, Lois is a model. Throughout the whole series, she has short hair but in this one, she has it up in a ponytail. Her hair isn't long enough for the hairstyle shown at the party.
Correction: She could have been wearing hair extensions.
Corrected entry: In the scene where Brian and Lois are talking in the bedroom, you can see that they both sleep in two separate beds. However, in a different scene when Lois is riding on top of Peter in the bedroom, you can see there is only one double bed inside the room.
Corrected entry: The sheet of toilet paper change numbers when Lois tears them off to put on the seat (right before she sees Quagmire peeping on her). She tears off three sheets, but they change to four when she puts them on the seat. (This happens on both sides of the seat).
Corrected entry: When Peter has a flashback to his sixteenth birthday party there are only 12 or 13 candles on the cake. (00:16:20)
Correction: He doesn't comprehend. He just gives a response to whatever answer Chris would have given, since he can assume that Chris would've given him an answer. Peter is just saying anything to get out the room, and the timing of Peter's response to Chris' nod can be explained by the fact that Peter knows the pace of a conversation.
Gary O'Reilly