- Brick Joke: Ralph mentions that he's friends with a leprechaun that tells him to burn things. In the end, when everyone is cheering for him, the leprechaun tells Ralph to burn down The Simpsons' house.
- When they first enter the Knowledgeum, The Simpsons are introduced to the place by Troy Mc Clure who warns them that their car might be subjected to repeated break-ins. Homer was the only one worried about that. After leaving we clearly see their car has broken windows.
- A Day in the Limelight: For Ralph and Bart mostly, meaning that Nancy Cartwright gets to talk to herself through 90% of the episode, as she also voices Nelson Muntz and Kearney.
- Nose Nuggets: "I found a moon rock in my nose!"Bart: Houston, we have a booger.
- Sarcasm-Blind: When Mrs. Krabappel asked the students seven times eight, Milhouse answered "low battery" (they were using calculators) and didn't understand her reaction to his answer was sarcastic.
- The Scrooge: Mr. Burns saved Mayor Quimby by cutting off the electricity supply to the electric chair, but his motives were less than noble. Burns simply wouldn't supply electricity to anyone who wasn't paying for it (though why would a prison still have electricity and a security guard if no-one's been using it for years?)
- Throw the Dog a Bone: Lisa was the one to come up with a plan to save Mayor Quimby but the one congratulated was Ralph for suggesting to ask for her help. Lisa gives in out of pity.
- What Does This Button Do?: Bart presses the keyboard buttons on the visible computer despite Frink telling him to stop. It's done to the point the computer crashes and catches fire.