The Thin White Line (1) - S3-E1
Continuity mistake: When Peter is looking at places to go on holiday, his hand is on his plate. Camera changes and it's no longer on the plate. (00:06:40)
The Thin White Line (1) - S3-E1
Continuity mistake: When Brian sniffs the coke for the first time, the position of it on the floor is constantly changing position. (00:06:25)
The Thin White Line (1) - S3-E1
Continuity mistake: Brian is at a nursing home playing checkers with a lady. When he gets up, the checker board vanishes. (00:19:20)
The Thin White Line (1) - S3-E1
Continuity mistake: Mr Weed walks in and has his right arm behind his back. Camera changes and now it's down by his side. (00:01:40)
The Thin White Line (1) - S3-E1
Continuity mistake: At the start we see Peter eating at the table and there is no-one to his left. Camera changes and a man in a red shirt has appeared. (00:01:40)
The Thin White Line (1) - S3-E1
Continuity mistake: When Mr. Weed comes into the canteen to say about the company picnic, the stuff on the Peters table vanishes instantly. (00:01:40)
Continuity mistake: When the black knight appears and says to Peter "What are you doing with my girl!?", there is a pitcher and a basket with a chicken leg on the table. But on the next shot where the camera is facing to Peter, both the pitcher and the basket disappear. (00:17:20)
Stuck Together, Torn Apart - S3-E19
Continuity mistake: After Quagmire changes the time on the clock, the clock disappears in the next shot.
A Very Special Family Guy Freakin' Christmas - S3-E16
Character mistake: In the scene with Peter and his buddies downtown, the sign on the store across the street from them on the right side of the screen is misspelled as "Quahog Sporitng Goods."
Ready, Willing, and Disabled - S3-E15
Continuity mistake: When the guys are at the bar, Joe's glass of beer has foam at the top. When he starts crying, it completely disappears seconds later.
The Kiss Seen Around the World - S3-E8
Continuity mistake: When Tom Tucker is in the school, he begins his news report standing in front of some lockers. In the next shot, from the news camera's point of view, he is now standing in front of some students. (00:03:50)
The Kiss Seen Around the World - S3-E8
Continuity mistake: Peter and Chris are in a toy store together, standing next to a piano with white and black keys. In the shot before they leave the pianos, the black keys disappear. (00:01:10)
Revealing mistake: When Peter says "kicking, Lois?", after being kicked into the stereo, his nose very briefly turns white. (00:20:00)
Death Lives - S3-E6
Revealing mistake: When Peter first meets Lois's dad, when they are talking, when Carter raises his eyebrows, for a split second, you can see his "extra" set of eyebrows.
One If By Clam, Two If By Sea - S3-E4
Continuity mistake: When Peter, Joe, Cleveland and Quagmire are in jail, Peter is the only one of them with a inmate number on his outfit. It's the same with the other inmates. Some have numbers and some don't.
Death Lives - S3-E6
Continuity mistake: The steering wheel in Cleveland's van changes color. First it's black. Then it changes to grey when Peter gets in.
To Live and Die in Dixie - S3-E12
Continuity mistake: When the FBI agents are telling Lois that the killer knows where they are, the sky keeps alternating from night to daytime and back.
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