Continuity mistake: When Stewie is trying to get a drink from Brian, there are two alcohol bottles on top of the table. But one is gone for two shots, then comes back. Also the bottles change from closer to father.
Continuity mistake: Brian insults Stewie about the water and there is a water glass by Bryan's plate. Then it cuts to a shot of Stewie and Chris, and the glass is gone.
Stu & Stewie's Excellent Adventure - S4-E30
Continuity mistake: At the end of the previous episode, Stewie gets on a cable car and sits next to older Stewie and they are facing out of the car. However, at the start of this episode, the seat they are sitting on is facing forwards.
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