- Brick Joke: When Doof sings Doofania's anthem, he feels "like it stops too quickly" and decides to work on it. During the ending credits, he comes up with a new version for the anthem and says the stopping still bothers him.
- Clothing Switch: Vanessa and Candace wear each others' signature outfits, thanks to a mix up at the dry cleaners. Neither is happy about it.
- Face Palm: Doof does it two times; one, when Norm is hiding behind a pole, and two, when he reveals himself while playing hide and seek.
- Orbital Shot: Doofenshmirtz has one during the Doofania anthem.
Recap / Phineas And Ferb Hail Doofania
Candace and Vanessa's dry cleaning are switched, Doofenshmirtz tries to build his own private country while Perry is laid up from injuries, and Phineas and Ferb attempt to create a giant rainbow for Isabella. The accidental clothing swap symbolizes the fact that most of the episode reverses the usual tropes - this time around instead of Candace trying to bust Phineas and Ferb to Linda, Vanessa is trying to bust Doofenshmirtz and Norm to Charlene. Meanwhile, Phineas and Ferb build an -inator that inadvertently causes Doof's invention to disappear before Charlene can see it.