Continuity mistake: The colour of the ropes tying the ladders together changes from white to yellow. (00:11:00)
Continuity mistake: At the top of the mountain, there are 3 string of flags attached to a pole. The shortest of which is 3 flags. Red, Blue, Yellow. However, after the shot zooms and comes back to the Griffins, the colours are now Blue, Red, Blue. The colours of a second string also change. (00:13:30)
Continuity mistake: When Peter and the family reach the top of Mt Everest, it shows a long shot of them all by themselves. Cut to Lois talking - another family is suddenly sitting there, and the woman says "we beat you by one hour and 11 minutes." (00:14:00)
Continuity mistake: Just as the Griffin's start down the mountain the flags disappear from behind them. (00:14:30)
Continuity mistake: Walking down the mountain Stewie is behind Brian. When he gets the scarf out however, he is side by side with Brian. (00:15:10)
Continuity mistake: When walking down the mountain, in the long shots, there are footprints between Brian and Stewie. But in the close up there isn't any. (00:17:00)
Continuity mistake: Peter rescues the Fishmans. When the family pulls him up he's holding both of them under one arm and has a huge rock that came from nowhere under the other arm. (00:19:50)
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