
Continuity mistake: When the green car is hit by the train in the chicken fight, the driver vanishes from the car instantly. (00:04:30)

Continuity mistake: At the start we can see Quagmire and Mort sat at the bowling lane and Peter is nowhere to be seen. When the shot changes, Peter is now stood ready to bowl. (00:00:35)

Continuity mistake: At the bowling alley just as Mort is about to bowl a perfect game, the bowling ball in Joe's lap and the beer in his hand disappear. (00:01:45)
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