Continuity mistake: When Joe arrives at the orphanage when he's telling his story, the sign changes position and the writing changes on it. (00:11:30)
Continuity mistake: When Chris hides the vodka from his teacher, he holds his right hand behind his back with his left arm at his side, but in the next shot, both his hands are behind his back. (00:09:40)
The Thin White Line (1) - S3-E1
Continuity mistake: When Brian is saying that his family has it all wrong about his drugs, Lois is holding Stewie. In the very next shot of his family from the front, Stewie is standing on the ground, without any time for him to climb down. (00:15:10)
Factual error: When Carol gives birth there is no umbilical cord. (00:06:30)
Peter Griffin: Husband, Father...Brother? - S3-E14
Continuity mistake: When Chris says "Cool, I get to be black and Irish, he is holding three books, the top one being green. A few moments later, the top book is brown.
Chitty Chitty Death Bang - S1-E3
Continuity mistake: In the flashback of Lois making a birthday cake, the cake has dark pink icing on the top and light pink icing on the sides. When Peter comes in to talk to Lois, the two colors have reversed. (00:01:35)
Continuity mistake: When the flag team first walks out to the field, they are all in a straight line. Next time they are in two seperate lines with Meg at the head. Also, the girl with the head brace moves to the front when she is seen in the back. There is not enough time for them to move into the lines. (00:06:50)
Continuity mistake: When Lois is talking to her father about Peter wanting to be friends with him, the two emblems on Carter's shirt disappear between shots. (00:07:55)
Chitty Chitty Death Bang - S1-E3
Continuity mistake: When the Cheesie Charlie's worker walks away from Peter there is no game on the right of the 'Outlaw' game, but in the next shot, there is. (00:07:30)
Continuity mistake: When Stewie is sitting on Lois's lap watching TV and Peter comes in, at first his book his blue then it is red. (00:02:25)
Peter, Peter, Caviar Eater - S2-E1
Continuity mistake: When Stewie is asking the waiter to cut his food (and drink), his eggs disappear between shots. (00:10:20)
Continuity mistake: In the end of the episode whilst the families are eating lunch at the picnic table there is a lot of plates of food and glasses on the table. Towards the end of the scene Brian says "I guess some mysteries are better left unsolved", there is a wide shot after he says this and every plate and glass from the table has disappeared. (00:21:25)
The Kiss Seen Around the World - S3-E8
Continuity mistake: Brian is looking at board games. Before he spots his favourite (in the wide shot), there is a game of Snakes & Ladders to the left of Chinese Checkers. In the close-up, S&L is gone, and CC has moved up closer to Brian. (00:00:50)
Death Lives - S3-E6
Continuity mistake: In the scene where Peter gets a ride from Cleveland, there is no one behind the wheel of the car while Peter is walking up to the front door.
Continuity mistake: When Peter walks away from Brian with the hula hoop around his waist, he runs into the stereo, knocking a vase of flowers on the floor, shattering the vase. Next shot shows the mess cleaned up without anyone even cleaning it. (00:04:45)
One If By Clam, Two If By Sea - S3-E4
Other mistake: When the cops burst into the house we see the action on a TV as shown by the Quahog News logo in bottom left. However on the TV in the living room the logo is missing. It should be there as well. (00:12:45)
Brian: Portrait of a Dog - S1-E7
Continuity mistake: Brian's black collar briefly turns back to his red one when he's looking at the bird combust. (00:05:56)
Revealing mistake: Peter's right eye overlaps his nose when Lois reminds him about getting drunk off communion wine at church. This mistake was later referenced in "Back to the Pilot." (00:02:50)
Road to the North Pole - S9-E7
Continuity mistake: At the first house, the bag in the sleigh with all the presents in is ripped open when it falls off the roof. However, when Stewie and Brian leave the house, there is no tear in the bag at all. (00:32:55 - 00:36:45)
Peter, Peter, Caviar Eater - S2-E1
Continuity mistake: When Peter has become cultured and is talking to Coco and Jonathon, Jonathon's suit changes colour from brownish-green to grey. (00:14:00)