Three Men and a Comic Book - S2-E21
Continuity mistake: When Bart, Martin and Milhouse start to fight, the Radioactiveman issue 1 that they were protecting has disappeared from the table. Then when Marge brings up some food, they all start eating. The table has disappeared altogether.
Three Men and a Comic Book - S2-E21
Continuity mistake: When there is a rotating shot of Bart, Martin and Milhouse up in the treehouse, the shot never goes past the table, even though it should.
Three Men and a Comic Book - S2-E21
Audio problem: When Homer offers to take the family to Krusty Burger, Lisa is heard cheering, even though her mouth is closed.
Blood Feud - S2-E22
Other mistake: When Moe refills Homer's glass with beer and hands it to him, it briefly disappears and then suddenly reappears. (00:19:01)
Blood Feud - S2-E22
Audio problem: When Homer is kicking the postbox, Barney says something like "Fight the power" but his mouth never moves.
Blood Feud - S2-E22
Continuity mistake: When Mr. Burns gets up after the blood transfusion, Dr. Hibbert is incorrectly colored yellow instead of brown.
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.