SpongeBob and Patrick go to the Palace of Pranks, a prank store in search of the ultimate prank. To their delight, the manager named Frank sells them a rare can of invisible paint for just one dollar. Before they use it, Patrick remembers that the paint will stain clothes, and then he and SpongeBob take their clothes off so they aren't stained with the invisible paint. They decide to spray a park bench and sit on it, but get in an argument over who gets to spray the bench. During the fight, they spray each other until "several bad puns later", they are both completely invisible.
After asking a man for the time and accidentally scaring him away, SpongeBob realizes that he and Patrick can pretend to be ghosts and prank the whole town. They pretend to be ghosts and go around frightening everyone (moving things around in Sandy's treedome, eating a cake Mrs. Puff was going to eat, painting a moustache on Squidward's face, etc.), until Mr. Krabs, who "ain't afraid of no ghosts", is the last person in Bikini Bottom to be haunted. They attempt to frighten him and succeed until they attempt to burn a dollar bill. Mr. Krabs' fear is overcome by his love of money, and he attempts to extinguish the match with a bucket of water. The invisible spray is washed off of Patrick and SpongeBob, exposing their identities, and their nudity.
Though embarrassed, Mr. Krabs comforts SpongeBob and Patrick by saying he forgives them and was fond of pulling pranks in his youth. However, when they attempt to leave, the Krusty Krab now contains nearly everyone in Bikini Bottom, and Mr. Krabs showcases the "live, nude pranksters". An extremely embarrassed SpongeBob and Patrick try to cover themselves, and SpongeBob says "We should've bought the whoopie cushion!" as the episode ends.
( ‣ ) Associated production music
( • ) Original music
( ◦ ) SpongeBob music
‣Flop and Go (a) - John Fox [title card] ‣ ? [Palace of Pranks] ‣Witty Fellow - Gerhard Trede ["Good to see you, SpongeBob!"] • ? - Nicolas Carr ["They're floating in midair!"] ‣Tomfoolery - David Snell [SpongeBob and Patrick spraying each other] ‣Glissando Up - Eric Allen ["...half past invisible."] ‣Hercule Poirot - Gerhard Trede [at Sandy's] ‣Alien Spacecraft C - Gregor F. Narholz ["It is ghosts!"] ‣Dramatic Cue (d) - Ronald Hanmer [Sandy screams] • ? - Sage Guyton, Jeremy Wakefield [Sandy escapes to Texas] ‣Horlepiep - Jan Rap [SpongeBob and Patrick scaring everyone] • ? - Jeremy Wakefield [Krabs last to be haunted] ‣The Tip Top Polka/The Cliff Polka - Chelmsford Folk Band [Krabs' anti-ghost armor] ‣Captain Lenoe's - Michael Arthur, Colin Cater, Mick Graves, The Folk Players, Sarah Graves, Simon Ritchie ["Bring it on!"] ‣House of Horror - W. Merrick Farran ["Krabs, we've come to haunt you!"] • ? - Sage Guyton, Jeremy Wakefield [Krabs tries to escape] ‣Dramatic Cue (b) - Ronald Hanmer ["No! Don't burn me dollar!"] ‣Comic Walk - Sidney Torch [SpongeBob and Patrick become visible again] ‣Strip Tease - David Farnon [live nude pranksters]
Several Bad Puns Later
In the Brazilian dubbing, the line "Fake vomit? Real vomit?" was changed to "Gosta disso? Coisas sem forma?" ("Do you like This? Shapeless things?").
This episode shows Patrick loves Seanut Brittle.
This episode and SpongeBob Meets the Strangler were both set to be the end of the TV series. The SpongeBob SquarePants Movie was supposed to conclude SpongeBob originally. But the popularity of the first three seasons, and the movie continued the TV series with a new series by Paul Tibbit through the present, and a second movie set to be released in 2015. So therefore, this is the final episode of the original series.
In this episode it mentions that Spongebob has a right hand, in the episode "Neptune's Spatula" SpongeBob only has two left hands.
The German Title, "Die Geister von Bikini Bottom", means "The Ghosts Of Bikini Bottom".
Mr. Krabs' ghost prevention good luck charms includes having his underwear tied in a Melvit knot. A Melvit knot is used to hold a sail to a sailboat.
It is revealed in this episode that Sandy is originally from Austin, TX. (When her escape pod lands it's in the Austin area.)
In the Spanish version of the episode, the fish that says "toast" says "Fantasmas", or "ghost", in the Filpino dub he says "gusto nyo?", or "want some?", In the Hebrew version, he says "sandwich"; in Korean, he says "What's that?", in Indonesian version the fish says "Hantu (Indonesian version translated "Ghost")", not "Toast".
The prank toys Frank offers to SpongeBob are a Joy Buzzer, Exploding Chewing Gum, Fake Gag Dollar, Whoopie Cushion, Fake and Real Vomit, and Invisible Spray.
The title card design is a reference to old-fashioned newspaper ads for pranks.
The Dutch title of this episode is "Top of the fops" (fop means prank in Dutch), which is a pun of a British music program called Top Of The Pops. But at the Dutch version of the DVD "The Seascape Capers" this episode is listed as "SpongeBob is onzichtbaar" (SpongeBob is invisible) instead of "Tops of the Fops".
This is the last episode where Derek Drymon is seen in the opening cast.
The Krusty Krab's layout differs from other episodes.
Sandy's rocket breaks the surface of the water in the Pacific Ocean near the bottom of South America, revealing Bikini Bottom's location, and gives how it can snow in Bikini Bottom because of its location.
The bad puns what SpongeBob and Patrick said while spraying each other with the Invisible Spray was...
"I gotta hand it to you!" Patrick sprayed SpongeBob's right hand.
"Kind of got a empty feeling?" SpongeBob sprays Patrick's chest.
"I see what you mean!" Patrick sprays SpongeBob's left eye.
"No guts, no glory!" SpongeBob sprays Patrick's gut.
SpongeBob actully sparayed Patrick in the crotch when he says " No guts no glory".
Mr. Krabs' line "I ain't afraid of no ghosts" is the same as the Ghostbusters theme tune.
When SpongeBob asked a guy what time it is, he says that it's 10 to 3 (2:50), but captions say that it's 3:00. Also in Bahasa Indonesia version of this title, instead of saying it's 10 to 3, the guy said it's 10:03.
Mrs. Puff never deflates turning very thin, As in other episodes, she deflates back to normal size. She may have possibly deflated out of fright.
When Sandy is frightened by the "ghosts", her escape pod breaks the Treedome. Sandy said the dome was made of polyurethane (plastic) in "Tea at the Treedome", rather than glass. Furthermore, the dome is not flooded with water and is fixed in the next shot.
SpongeBob and Patrick are not wearing water helmets when they are in Sandy's Treedome. Nevertheless, bubbles appear when Sandy removes their sheets.
All of Mr. Krabs' ghost prevention charms are gone in the next shot.
When Mr. Krabs is inside the Krusty Krab, the windows have blinds; in subsequent scenes, the blinds are gone.
When the invisible spray has washed off Patrick, his belly button is gone.
Sandy went to Texas with the rocket, but in the end she was in the Krusty Krab. It is possible that she went back.
At the Krusty Krab, Sandy whistles by putting her fingers to her mouth, which is impossible because of her helmet.
Mr. Krabs splashes a bucket of water on SpongeBob and Patrick to wash off the paint, despite the fact that they live underwater.
SpongeBob and Patrick glued the door to the Krusty Krab shut, yet a huge crowd of people came in to see the "live, nude pranksters".
After Mr. Krabs throws water on SpongeBob and Patrick, SpongeBob's shoes and socks are visible, despite the fact that the invisible paint stains clothes. Furthermore, when SpongeBob explains that fact, he says "paint" instead of "spray".
When Mr. Krabs grabs SpongeBob and Patrick, the dollar in Patrick's hand disappears.
Mr. Krabs says that he has taped the hairs on the back of his neck down, but when he is fleeing from the "ghosts", there is no tape on his neck.
When SpongeBob and Patrick fight over the Invisible Spray, they are by the road, but when they are completely invisible, the road isn't there.
Frank says the Invisible Spray is $1, but SpongeBob gives him $3 and doesn't get the other $2 back.
The credits mention Plankton, but he didn't appear in this episode.
The toilet (Mr. Krabs tries to swim through) is out in plain sight and not hidden by a divider.
You can see the background behind the toast in the sceen where Sandals says "Toast".
Patrick, Mr. Krabs, and SpongeBob was in the restroom but after SpongeBob and Patrick came out, they were near Mr. Krabs' office.