Bart begins smoking to impress Milhouse's cousin Annika. Meanwhile, the rest of the family learn about Grampa's days in the U.S. Air Force.
- Insane Troll Logic: How do you get kids to stop parents from bankrupting themselves for their kids birthday parties? Why, ruin every kids party in town of course.
- Jerkass Has a Point: Horrible as it may be going around ruining children's birthdays, Marge agrees with Homer that children's birthdays are far too expensive and elaborate nowadays.
- Kissing Cousins: Milhouse confirms that his parents are in fact cousin, he even has a lizard tongu due to the inbreeding.
- Multiple-Choice Past: In this episode, Grampa was in the U.S. Air Force. As lampshaded by Bart and Lisa, other episodes described him as either a former Army soldier or a former Navy soldier. Gramps then comments that this kind of confusion was usual back in his days in the Marine Corps.
- Not Allowed to Grow Up: The idea of never having birthday parties ever again makes Bart and Lisa fear they'll always have the same age.
- Not Cheating Unless You Get Caught: One of Abe's friends compares Homer's treatment of him to how they treated Prisoners of War whenever the Red Cross wasn't looking.
- Recursive Reality: Homer mentions Mr Burns: A Post-Electric Play in his incredibly long list of stories featuring futuristic dystopias. In other words, in the world of The Simpsons, there exists a play about post-apocalyptic survivors reenacting their favorite Simpsons episodes, which implies The Simpsons show exists within The Simpsons show.
- Sins of Our Fathers: When Homer sabotages the extravagant parties other parents prepared for their kids, the heads of the party industry retaliate by threatening to deny any sort of entertainment for his kids' birthday parties.
- Take That!: Parties are the only remaining industry in America.
- What Do You Mean It's Not Heinous?: As punishment for ruining so many children's birthday parties, the Big Birthday people blacklist the Simpsons from ever having anther birthday ever again.