Tropes:
- Cloud Cuckoolander: King of Ooo continues to be this, ordering Finn and Jake to capture and tame a giant flying mushroom for him to ride like a Magic Carpet, and at the end he attempts to ride a mushroom pizza by sitting on it and having a banana guard push him down a flight of stairs.
- Continuity Nod: Dirt Beer Guy makes a walk-in appearance.
- Dowsing Device: Canyon uses a divining rod to find the sacred spring.
- Enhance Button: Spoofed. When the King of Ooo asks to enhance the video footage of the flying mushroom, the Banana Guards just push Finn and Jake closer to the monitor.
- Fungus Humongous: The flying mushroom creature, which actually absorbed other mushrooms to increase its mass.
- Hostile Terraforming: The flying mushroom monster is capable of shooting spores in laser blasts that rapidly germinate into a layer of mushrooms. Appropriately enough it resembles a UFO.
- In-Series Nickname: Finn calls King Of Ooo "Koo" and Jake picks it up.
- Infodump: During its battle with Canyon, Finn, and Jake, the giant flying mushroom offers up interesting facts about mushrooms and fungi in a baritone.Flying Mushroom: (after knocking Finn and Jake back) The branch of biology dealing with fungi is called mycology.
Finn: (in a tired voice) We're learning a lot about mushrooms today. - Making a Splash: Canyon, upon finding the spring water, manipulates it as a weapon and then wears it as a scarf.
- Talking Is a Free Action: Averted as the giant flying mushroom attacks Jake while he tries to crack a one-liner.Jake: Hey now, that was poor spore-tsmansh...WHOA! Mid-joke? YOU MONSTER!
- The Bus Came Back: Canyon, Billy's ex.
- Title Drop: The end of the episode has the banana guards singing "Mama Said" by the Shirelles
. - Too Important to Walk: The King of Ooo wants the flying mushroom so he could ride around on it, thinking it would make him look important.
- Trivial Title: The reason for the title doesn't come up until right at the end.
- Verbal Judo: Finn tries to reason with the flying mushroom instead of fighting it. It works up until he accidentally hits it in the eye.
- Wham Line: "You two are... fired!"
