Audio problem: When Peter goes down to the basement, the Pawtucket Patriot guy appears and Peter thinks he's coming on to him. He says, "Listen, I don't swing that way, pal. I got a date with my female wife, I just came down to get some beers." However, his lips very obviously do not sync up with those words.
Other mistake: When Lois is saying that she'll make a nice romantic dinner, Chris's picture on the wall not only looks completely different, but he's wearing glasses. (00:08:00)
Continuity mistake: When Peter is talking about how annoying it is to be locked up in the house, Brian disappears from the couch in quite a few shots. (00:07:50)
Continuity mistake: When we first see Stewie playing with his Sesame Street phone, he gets closer to the Griffins' path between shots. (00:00:05)
Continuity mistake: When Peter first goes down into the basement, there is no railing on the stairs. One suddenly appears later in the same scene. (00:08:40)
Continuity mistake: When Lois starts crying in the supermarket, the boxes on the top shelf change colour between shots. (00:16:40)
Continuity mistake: When Peter comes home from his fishing trip he leaves mud prints all over the floor. Even Lois points it out, but after he goes through his two flashbacks, the mud is all gone. (00:03:15)
Continuity mistake: When Lois is talking about how amazing her singing was, in one shot Stewie disappears from his chair. (00:14:15)
Continuity mistake: When Peter comes home from fishing his hat disappears from the side of the couch in a later shot. (00:03:40)
Continuity mistake: While cooking dinner, and waiting for Peter, Lois has a watch on. As she comes down the basement stairs, it's suddenly gone.
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.