When You Wish Upon a Weinstein - S3-E22
Audio problem: When Peter sings "I Need A Jew", his mouth doesn't match the lyrics when he sings the line, "I don't think they killed my Lord"; this is because the original line, "Even though they killed my Lord" was considered too anti-Semitic.
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