The Koopalings visit a water park and Morton is afraid of getting in the water, while Larry is afraid of going on a water slide, not helped by his siblings mocking him over it.
Tropes:
- Abusive Dad: As part of Early-Installment Weirdness, Bowser threatens to punish the Koopalings by not allowing them to eat in weeks if they don't agree to look after Junior in the Water Park.
- Eye Scream: Larry squirts some sun lotion into Lemmy's eyes, blinding him temporarily.
- Food Slap: Larry takes the ice-cream cone Junior was eating and smacks it into his face, which is payback for him spending the whole episode insulting him for being scared of the water slides.
- Hypocrite: Most of Larry's siblings, especially Ludwig and Junior, spend the whole episode mocking him for being scared of going into the water slides, but when they see just how brutal the slide Larry gets pushed into really is, they all decide to not go into it, clearly scared of what they just saw.
- Laser-Guided Karma: Ludwig and Junior in particular spent the whole episode insulting Larry over him being scared of the water slides, so when Larry goes on a Roaring Rampage of Revenge, he makes those two pay for it the most.
- Luminescent Blush: Roy gets this when the other Koopalings laugh at him for wearing a speedo that he got from the lost and found.
- O.O.C. Is Serious Business: Larry, who is normally shown to be the nicest of the Koopalings, completely loses it and hurts most of his siblings in some pretty nasty ways after they mock him for being scared of going on any of the water slides.
- Persona Non Grata: By the end of the episode, the Koopalings are no longer allowed to step foot into the Water Park.
- Rage Breaking Point: After being made fun of one too many times, Larry finally snaps and takes revenge on everyone who mocked him.
- Roaring Rampage of Revenge: Larry takes his frustration out on everyone who mocked him throughout the episode, starting with a Goomba who he incinerates with his fire breath. Ludwig and Junior especially get a brutal punishment.
- Surprisingly Realistic Outcome: If you attack anyone at a water park, or any other similar place, then you will more than likely get in trouble with security and banned from going there for a very long time.
- Those Two Girls: Lucy and Courtney make an appearance in this episode.
