While on his deathbed, Grampa makes a confession to Homer about the past. He comes to realize that the issue will not be easy to reconcile when he makes a recovery. This is also the 636th episode, surpassing Gunsmoke's record for most episodes in a series.
- The Atoner: Grampa decides to recover the lost recipes.
- Bait-and-Switch Comment:
- Grampa mentions Pearl Harbor in a letter. He means a person by that name instead of the historical place.
- Dr. Hibbert sadly tells the Simpsons the hospital staff did everything they could to save Grampa. Then his mood improves and he tells them the last thing worked.
- Busman's Holiday: A flashback revealed that building model airplanes was Abe's only way of relaxing after a hard day of working at a model airplane factory.
- Calling the Old Man Out: Not just Homer but the whole family go to tell off Abe when they find out about he threw away Mona's recipes.
- Contrived Coincidence: In the end, Homer goes to a car lot to buy a car to replace the one he lost at the beginning of the episode. Said car turns out to be the only one he can afford.
- Epic Fail:
- Just a few seconds after Lisa starts the silent treatment, Homer assumes it's been months.
- Grampa needs binoculars to read a sign that's right in front of him.
- They Changed It, So It Sucks: An In-Universe example occurs when an angry audience destroy a new Truckasaurus designed with feathers, which is a reference to the hatedom on feathered dinosaurs.