You'll be trembling helpless lumps of fear when we are done
Grim unearthly creatures flaunting nauseating features make for ghastly midnight screechers,
You'll be speechless but for AAAAAAAAAHH!!!
It's Halloween night, and Patrick helps Spongebob overcome his fear of the holiday by convincing him that "scary equals funny". Spongebob ends up having a laugh riot on Halloween night, which attracts the attention of the Flying Dutchman. Finding the scares provided in Bikini Bottom lackluster, the Dutchman decides to show Spongebob and Patrick how truly frightening Halloween can be.
"The Legend of Boo-Kini Bottom" contains examples of:
- Art Shift: This is the second special to use stop-motion animation for the characters, while certain effects also utilize puppetry. Within the episode itself, the inside of SpongeBob's mind is animated in a psychedelic style reminiscent of Yellow Submarine.
- Call-Back: Plankton warns the Flying Dutchman that he's personally seen some frightening things in SpongeBob's brain. Plankton's referring to when he entered SpongeBob's mind in The SpongeBob Movie: Sponge Out of Water and found the Sugar Bowl lying inside his brain.
- Continuity Nod: SpongeBob wears his flower costume from "Krabby Land" for Halloween.
- Evil Is Not a Toy: After Spongebob flees the Dutchman's ship, Plankton's soul escapes from his cage and tries to convince -the Dutchmn to partner with him to take over the world, rulling it 70-30. The Dutchman uses his powers to transform Plankton into his minion.
- Faux Horrific: Patrick thinks Squidward scaring trick-or-treaters away with onions is truly terrifying.
- Halloween Episode: This is the second episode of the show to revolve around Halloween, the first being "Scaredy Pants" back in season one. Both episodes feature SpongeBob trying to get over his fears of the holiday, and have the Flying Dutchman in a prominent role.
- Horrifying the Horror: The Flying Dutchman is terrified by the overly saccharine images he sees within SpongeBob's psyche.
- Kids Are Cruel: After seeing the Flying Dutchman steal the souls of Squidward and Mr. Krabs right in front of them, a couple of kids proceed to egg both their unconscious bodies and the Krusty Krab.
- Oh, Crap!: SpongeBob brushes off seeing the imprisoned souls of his friends, assuming they're just more illusions made by the Flying Dutchman. It's only once he sees Patrick's soul imprisoned and his lifeless body beside him that he begins to freak out.