A Picture Is Worth 1,000 Bucks - S2-E11
Revealing mistake: When Brian is shaking his head saying he will never go to the theater with Peter again, you can see part of his neck is missing. (00:09:10)
A Picture Is Worth 1,000 Bucks - S2-E11
Revealing mistake: When the hotel employee gives Peter the key to the room, the man's moustache turns yellow for a second.
A Picture Is Worth 1,000 Bucks - S2-E11
Other mistake: Brian says he met Antonio Monatti when he was with Andy Warhol in the '70s. This is an impossibility. Only several episodes earlier (in episode Brian in Love), we find out that Brian is 7 years old.
A Picture Is Worth 1,000 Bucks - S2-E11
Audio problem: When Peter comes out of the bathroom with wet hands and goes to dry them, the sound of the dryer is heard before he touches the button.
A Picture Is Worth 1,000 Bucks - S2-E11
Continuity mistake: In one shot of the Griffins at the hotel, Brian's collar is yellow instead of red.
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