Covercraft - S26-E8
Trivia: On the wall in Apu's changing room is a picture of the Be Sharps, the barbershop quartet consisting of Homer, Apu, Seymour Skinner and Chief Wiggum that was featured in the Season 5 episode Homer's Barbershop Quartet.
Covercraft - S26-E8
Trivia: On the wall in Apu's changing room is a picture of the Be Sharps, the barbershop quartet consisting of Homer, Apu, Seymour Skinner and Chief Wiggum that was featured in the Season 5 episode Homer's Barbershop Quartet.

The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1
Continuity mistake: Lewis changes from black to yellow when Milhouse dares Bart to pull Santa's beard off. (00:14:10)
Tree House of Horror X - S11-E4
[The Simpsons are driving down a road as fast as possible.]
Homer: Dear God, it's Homer. If you really love me you'll save my life now.
[The gas needle immediately drops to empty and the car stops.]
Homer: D'oh.
Who Shot Mr. Burns? (2) - S7-E1
Question: Chief Wiggum says that Space Invaders was an addictive video game, and Groundskeeper Willie says, "Video game?" I don't understand why he is so shocked. Could someone help please?
Answer: The joke is that Willie was so addicted to Space Invaders that he believed it was reality: every time he played, he was actually defending the Earth from dangerous aliens. It's a surprise to him that it was actually a game.
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.