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