- False Reassurance: Isabella is a bit wary when Phineas is about to launch her to the treehouse platform with a tube-swing cannon, but he says they haven't missed yet...because she's the first passenger.
- Humongous Mecha: Skycraper size and made of wood.
- Instant Awesome, Just Add Mecha: It was awesome folks, very awesome.
- List Song: "My Goody Two-Shoes Brother" includes a list of people Doofenshmirtz hates.I bear lots of animosity to bellhops
They never bring my luggage up on time
And taxi drivers really tax my patience
If they vanished, would it really be a crime?
- Transforming Mecha: Those treehouses can turn into Humongous Mechas.
- Treehouse of Fun: It's got so many luxurious things in there, it's like a playground at mansion size. To top it off, they double as Transforming Mechas
- Visual Pun: As Candace admires "all the bells and whistles" in her new tree-house, she and Stacy pass by a wall lined with actual bells and whistles.