Encyclopedia SpongeBobia
Encyclopedia SpongeBobia
If you were looking for the article about the book, then see Wormy (book).
If you were looking for the article about the character, then see Wormy (character).

"Wormy" is a SpongeBob SquarePants episode from season 2. In this episode, Patrick and SpongeBob take care of Sandy's pet caterpillar Wormy while she's away, but when it turns into a butterfly overnight, they think it's a monster who ate Wormy.



SpongeBob and Patrick looking after Wormy.

As the episode commences, SpongeBob and Patrick are given the task of pet-sitting Sandy's pets while she is out of town. One of the many animals left in their care is a small Monarch caterpillar named Wormy. Despite it requiring the least attention, SpongeBob and Patrick quickly befriend the caterpillar and enjoy a day of play together. As the two leave, they vow to have even more fun with Wormy the next day.

Overnight, Wormy undergoes a quick metamorphosis and becomes a monarch butterfly. When they return the following morning, SpongeBob and Patrick search for their new friend, but merely see what looks like a beautiful winged creature instead. Upon opening the jar and finding only Wormy's discarded chrysalis and best friend ribbon inside, they come to the grim conclusion that this "horrific beast" has devoured Wormy and is now on the loose. They try to trap the supposed monster by disguising Patrick as bait. When this fails, SpongeBob manages to encase the butterfly in a bubble and releases it outside the treedome, in attempt to "save" Sandy's pets. However, now the butterfly is loose in Bikini Bottom, so SpongeBob and Patrick chase after it.

"That flying monster has eaten three friends too many."

Beating the creature to the Krusty Krab, SpongeBob interrupts Squidward's photoshoot of Mr. Krabs with the first dollar he owned since the Krusty Krab opened, so he could warn Mr. Krabs and Squidward, both of whom scoff at the tiny insect. However, with one good look at its face, the two are scared senseless and run away, their discarded undergarments leaving SpongeBob and Patrick to believe they were also eaten.

SpongeBob and Patrick begin to spread news of the "terrible monster" throughout Bikini Bottom. Mass chaos erupts with every tiny flap of its wings, and as a result of the people's hysteria, the whole town ends up destroyed in a fire.

A few days later, Sandy arrives back at the ravaged town, saying that it looks like a twister hit it and wonders where everyone is. Wormy then flies up to her and she recognizes him, saying that he was not supposed to change until her return, and places him inside a jar. As the episode concludes with all the townsfolk cheering and celebrating the capture of the so-called monster, Sandy believes it to be just because they missed her that much, and thinks maybe she should go out of town more often.

Running gags

  • Wormy's close-up in his butterfly form.
  • Everyone getting scared of Wormy as a butterfly and mistaking it for a monster.
  • Chaos spreading all over Bikini Bottom.




 ) Production music
 ) Original music
 ) SpongeBob music

  12th Street Rag - Sage Guyton, Jeremy Wakefield [Title card]
  Dreamy Hawaii - Terry Day [opening]
  Earl's Revenge - Sage Guyton, Jeremy Wakefield [Sandy's pets]
  Children 2 - Dave Hewson ["Hey, little fella."]
  Puka A - Sage Guyton, Jeremy Wakefield [playing hide, seek]
  That's What Friends Do - Peter Straus
  Youthful Days - Mike Sunderland ["Gee, SpongeBob, I don't want today to end ever."]
  Code "Dead End" - Gregor F. Narholz [Wormy turning into a butterfly]
  On The Beach - Kapono Beamer ["Here I come, Wormy!"]
  House of Horror - W. Merrick Farran ["I think something bad happened to Wormy."/SpongeBob and Patrick scream.]
  Flight in Panic 1 - Gregor F. Narholz [SpongeBob and Patrick running to the door/SpongeBob and Patrick running backwards]
  Hangman (B) - Dave Hewson ["Now what?"]
  Action Cut A - Gregor F. Narholz ["He's eaten Patrick!"]
  Footsteps of Horror - W. Merrick Farran [phone in jar/Patrick on a dinner plate/Patrick runs away]
  Death Trap - Gregor F. Narholz [SpongeBob traps the butterfly in a bubble]
  Bridgehead Alt. End - Sam Fonteyn ["Yeah!"]
  Lovely Scenery C - Mladen Franko ["...headed straight for the Krusty Krab!"]
  Hit and Run - Sam Spence [secret entrance]
  Frankenstein's Niece A - Gregor F. Narholz [SpongeBob warns Krabs about the "monster"]
  A Sad Affair - Mike Sunderland [SpongeBob and Patrick crying]
  Frankenstein's Niece A - Gregor F. Narholz ["That's the monster?"]
  The Rake Hornpipe - Robert Alexander White ["Get a load of the scary monster."]
  Frankenstein's Niece A - Gregor F. Narholz [Squidward and Krabs scream/"It ate them! And there it goes!"]
  Harp! - Nicolas Carr [thumbs up]
  Seaweed 2 - Steve Belfer [SpongeBob, Patrick warning everyone]
  12th Street Rag - Sage Guyton, Jeremy Wakefield [everyone running from the butterfly]
  Bridgehead Alt. End - Sam Fonteyn [ending]



  • "Wormy" was ranked #57 during the Best Day Ever event from November 9–10, 2006.
  • "Wormy" was ranked #43 during the SpongeBob's Top 100 event in the UK and Ireland from June 4-8, 2012.



  • The working title for this episode, according to production art, was "Shoofly."
  • The title card of this episode is similar to that of "Sandy's Rocket," except this one is mismatched and has bubble in it.
  • At the beginning, Patrick whistles and SpongeBob remarks "I didn't know you spoke bird," to which Patrick replies, "No, that's Italian, SpongeBob." In the Italian version, he says that it is Spanish.[3]
  • The quote "Why does this keep happening to me?!" was later used in the online game Dirty Bubble Busters.
  • Wormy is able to complete the full transformation from a caterpillar to butterfly in just one night. In real life, this is impossible, and the length varies with different species of butterfly. In Wormy's case, Monarch butterflies spend 10 to 16 days in the chrysalis stage when changing into a butterfly.
    • Sandy lampshades this by saying "You weren't supposed to change 'till I got back."
  • This episode marks Sandy's return after her ten-month hiatus in "Fools in April."
  • This is the first episode were Sandy's tail is out of her diving suit, right after Season 1 as her tail was inside of her diving suit.
  • There are three books based on this episode, titled Wonderful Wormy, Salty Sea Stories, and Wormy, respectively.

SpongeBob and Patrick putting up the butterfly poster that says "Beware."

  • The warning poster SpongeBob and Patrick put up depicts a Viceroy butterfly, while Wormy is actually a Monarch butterfly. Viceroys belong to a different family group of butterflies and are smaller and less common than the Monarchs. The reason why Viceroys resemble Monarchs is due to Müllerian mimicry, in which two separate species that share a certain predatory defense mechanism (in this case, tasting bad and to birds) also share very similar warning patterns.
    • It is very likely that Spongebob and Patrick did not know the difference between the two species, having never seen a butterfly up until now.

An image of a horsefly is shown instead of an actual butterfly in this episode.

A real monarch butterfly face closeup for comparison.

  • When Wormy's face is viewed as a close-up in butterfly form, a stock footage of a horse fly is used instead of an actual butterfly.
  • Wormy's close up and everyone getting scared of it became an Internet meme and created a crossover where other characters from other series got scared of Wormy.
  • This is the 50th episode segment in the series in both production and premiere order.

"Dogs" can be on a building.

  • When SpongeBob stands on a treasure chest, warning people about the butterfly, the word "Dogs" can be seen on a building in the background. In fact, dogs live in land.
  • During the Craziest Creatures Marathon it was paired up with "Frankendoodle."[4]
  • Plots of this episode were later used in the second part of the LeapPad Interactive Book and Cartridge SpongeBob SquarePants Salty Sea Stories, which was released in 2003 by LeapFrog Enterprises.
    • In the LeapPad adaption of this episode, there is an extra scene at the end where Sandy reveals the "monster" was Wormy all along, and SpongeBob and Patrick are relieved.
  • This is the first episode to permanently feature Patrick's new "Z" shaped eyebrows.
  • In this episode it is revealed Patrick had green eyes as seen in closeups.

An image of regular caterpillar shown in this episode.

A real Monarch Caterpillar close up for a comparison.

  • When Wormy is about to transform, they are depicted with a stock image of a caterpillar. The stock image is edited to look green, in order to match the colors used for Wormy when they are animated.
  • This is the first episode to feature a shortcut to the Krusty Krab.
  • "My leg!:" After seeing a butterfly that is attacking Bikini Bottom on the newscast, Fred runs out of his house and falls on the ground.
  • When SpongeBob says "We did it, Patrick!" during the destruction scene, a meteor can be seen flying down until it falls off-screen in the background for a few seconds later, at which point a flash can be seen in the background, referencing the landing explosion.
  • This episode and "Patty Hype" were banned in some countries, due to Wormy's face being a horsefly close-up frightening young viewers.[6]
  • This episode marks the second time that the Krusty Krab cash register boat operates like a vehicle. The first time was in the episode "F.U.N."

Horsefly close-ups in SpongeBob and Bill Nye the Science Guy

  • The live-action insect footage used throughout this episode are all royalty-free, and owned by Oxford Scientific Films. All of the footage can be found on Getty Images.[7]
    • The emerging butterfly footage was also used in Microsoft Encarta '95.[8]
    • The infamous horsefly close-up footage was also used in the Bill Nye the Science Guy episode "Insects."
    • The live-action butterfly clips (i.e. when Wormy emerges and the news bulletin about the "monster" attacking) depict a female Monarch butterfly with thicker wing veins, compared to male Monarchs having thinner wing veins. This suggests Wormy may have actually been a female butterfly, as it is very hard to determine a Monarch caterpillar's gender until it metamorphoses into an adult butterfly (and thus Sandy assumed that the caterpillar was male.)
  • This episode was paired with "Survival of the Idiots" during the Massive Monster Mayhem Marathon.
  • After running away from the Krusty Krab, neither Squidward nor Mr. Krabs appear again for the remainder of the episode.
  • This is the first episode to play "Code "Dead End". This soundtrack had not been used again until "The Donut of Shame."


  • During some of the high-speed actions that take place in Sandy's treedome, bubbles are seen floating around. This is incorrect, because Sandy's treedome is not filled with water.

SpongeBob's missing eyelashes.

  • When SpongeBob says, "Eh, sorry, I don't speak Italian," his eyelashes disappear for a split second.
  • When the final shot of Sandy is shown in her bikini before she leaves the treedome, in the next shot, she is wearing her spacesuit and helmet.
  • For the scenes with Sandy, her acorn is black instead of its usual color. This error also occurred in "Prehibernation Week."
  • When SpongeBob points at Wormy, his other tooth goes missing.
  • As mentioned above, when Wormy's face is viewed as a close-up in butterfly form, the wrong insect is shown. As Wormy is a butterfly, there are enormous, rainbow-colored, shimmering eyes and sharp mouthparts are seen, distinctive to that of a horsefly, instead of circular black eyes and a proboscis (tongue). Furthermore, butterflies do not make buzzing sounds, which (again) is a characteristic of flies.
  • When SpongeBob and Patrick first see Wormy's close-up, they both scream and run in opposite directions from each other. Then in the very next scene, they are shown hiding from Wormy in the exact same spot behind the picnic table.

SpongeBob's missing arm.

  • When SpongeBob and Patrick are about to hide behind the table from Wormy, SpongeBob's left arm disappears.
  • When SpongeBob begs Wormy not to eat him, his mouth syncs incorrectly.
  • When SpongeBob collects the bubble soap with his bubble wand, the cap is still on the container.
  • SpongeBob is able to blow a bubble in Sandy's treedome, despite the fact that he is wearing a water helmet.
  • SpongeBob does not take off his helmet when is wearing a cheerleader outfit.
  • The path from Sandy's treedome incorrectly leads to the Krusty Krab in this episode.
  • Squidward's Krusty Krab employee hat is missing when Mr. Krabs asks "What's the meaning of this, SpongeBob?!"

SpongeBob's teeth turns yellow instead of white in this scene.

  • In one scene, SpongeBob's teeth turn yellow.
  • When Squidward and Mr. Krabs take a closer look at Wormy, Squidward stands to its right and Mr. Krabs to its left. After Wormy's close-up is shown, they are standing on opposite sides before running off.
  • When Mr. Krabs and Squidward scream, they are out of sync.

Squidward's underwear is visible in the photo, even though he doesn't wear pants or underwear.

  • After Mr. Krabs and Squidward run away from Wormy, two pairs of underwear can be seen laying on the floor. This is also incorrect as Squidward does not wear pants or underwear.
  • At the end of the Krusty Krab scene, SpongeBob's front teeth are connected for a few frames.
  • When Patrick warns everyone about the "monster," his mouth syncs incorrectly.
  • The wings of a postman butterfly can briefly be seen on the TV, despite there being no other butterfly in the episode besides Wormy.
  • At the part where SpongeBob and Patrick run away from Wormy along with everyone else, the town is destroyed, but when they reach the stoplight while being chased, the town is perfectly fine.
  • Incidental 7's dress changes from yellow to gray at one point when the Bikini Bottomites are being chased by Wormy as a butterfly.

Patrick without eyes, SpongeBob without his buck teeth and floating, and Sandy's left arm and badge is gone.

  • When Patrick is with the people holding up SpongeBob and Sandy, he does not have eyebrows. In another shot during the same scene, he does not have eyes.
    • Also, SpongeBob's buck teeth and Sandy's left arm disappear for a split second.
    • In addition, he is floating and Sandy's badge is also gone.

Fred's transparent eyes.

  • Fred's eyes become transparent while carrying Sandy and SpongeBob at the end.



SpongeBob Iconic Moment New Best Friend YTV


Awards and nominations for SpongeBob SquarePants VE

Annie AwardsAnnie Award.png

Outstanding Individual Achievement for Voice Acting by a Female Performer in an Animated Television Production

Voice actors: Mary Jo Catlett as Mrs. Puff (in "No Free Rides;" 2001)

Outstanding Individual Achievement for Voice Acting by a Male Performer in an Animated Television Production

Voice actors: Tom Kenny as SpongeBob SquarePants (in "Wormy;" 2001)

Outstanding Individual Achievement for a Song in an Animated Production

Singers: Peter Strauss and Paul Tibbitt for "The Very First Christmas" (in "Christmas Who?;" 2001)

Best Writing in an Animated Television Production

Writers: C.H. Greenblatt, Paul Tibbitt, Mike Bell, and Tim Hill (for "Fear of a Krabby Patty;" 2006)

Best Voice Acting in an Animated Television Production

Voice actors: Tom Kenny as SpongeBob SquarePants (in "Spy Buddies;" 2008)

Direction in an Animated Television Production or Short-form

Directors: Alan Smart (for "Penny Foolish;" 2009)

Best Home Entertainment Production

DVDs: SpongeBob vs. The Big One (DVD) (2010)

Best Voice Acting in a Television Production

Voice actors: Tom Kenny as SpongeBob SquarePants (in "Truth or Square;" 2010)

Music in a Television Production

Composers: Jeremy Wakefield, Sage Guyton, Nicolas Carr, and Tuck Tucker (2011)

Writing in a Television Production

Writers: Dani Michaeli, Sean Charmatz, Nate Cash, Luke Brookshier, and Paul Tibbitt (for "Patrick's Staycation;" 2012)

Character Animation in an Animated Television or other Broadcast Venue Production

Animators: Dan Driscoll and Savelen Forrest (for "It's a SpongeBob Christmas!," 2013)

Directing in an Animated Television or other Broadcast Venue Production

Directors: Mark Caballero and Seamus Walsh (for "It's a SpongeBob Christmas!," 2013)