- Eugene H. Krabs
- SpongeBob SquarePants
- Squidward Tentacles
- Ivy (normal; brown)
- Shelly Fishbowl
- Jimmy Gus
- Nat Peterson
- Abigail Marge
- Medley Fishbowl
- Norma Rechid
- Vera Fishbowl
- Martha Smith
- Miss Shell
- Pearl Krabs
- King Neptune (mentioned)
- Unnamed bird (debut)
- Howard Blandy (debut)
- Howard Blandy's partners (debut)
- Bikini Bottom Construction Company
- Carl (debut)
- Hook Museum audio guide (debut)
- Football player
- Harold (red fish)
- Harold "Bill" Reginald
- Nancy Suzy Fish
- Frank (red shirt)
- Old Man Jenkins
- Frank (lifeguard)
- Frankie Billy
- Human Resources guy (debut)
- Jennifer Millie
- Basketball player
- Baby Peterson
SynopsisKrusty Krab and asks to buy the restaurant from Mr. Krabs for a large sum of money. Mr. Krabs happily accepts, leaving SpongeBob and Squidward with a simple "See you around," causing SpongeBob to cry hysterically. SpongeBob and Squidward leave the Krusty Krab to ask Mr. Krabs what is happening, he then tells them that he is retiring.
Afterwards, a new manager named Carl comes to them, renaming The Krusty Krab "Krabby O'Monday's." Mr. Krabs drives by, but ignores it, instead going to the newly opened Bikini Bottom Hook Museum, then when he is trying to paint a bowl of fruit, he actually paints a bowl of Krabby Patties instead, followed by a round of golf; however, he then realizes that he hates golf. Mr. Krabs has done everything he wanted to do and decides to go home, where he realizes he has nothing to do. He tries to talk to his daughter, Pearl, but Pearl kicks Mr. Krabs out of the house and tells him to get a job, a hobby, or some friends.
Downtrodden, Mr. Krabs goes to the beach to look for a job, but hits a glass door, with a sign saying "Help Wanted." It is one of the glass doors of the Krabby O'Monday's, so he goes inside to take a look at what job is vacated.
Meanwhile, Carl wants Squidward to have more spirit, so he threatens Squidward with a muscular Human Resources guy if he does not continuously smile. Fearful, Squidward continues his work with a forced smile. Mr. Krabs gets a job at the Krabby O'Monday's working as a busboy, listening to SpongeBob complain about the problems. The problems are that the patties are processed and there is an automated cash register, with no one watching it. Angered, Mr. Krabs complains, only to be ignored by Carl. He also finds out how the new patties are synthetically engineered, fake and disgusting.
Now furious, Mr. Krabs shows the customers what the food is actually made of and the customers find out that the patties are made out of gray material. So they run away, making the restaurant unpopular. Carl calls Howard to tell him what Mr. Krabs is doing. Mr. Krabs plugs the fake patty maker up, but escaping, processing slush and the pressurized air inside cause the whole restaurant to explode.
Mr. Krabs retakes ownership of the destroyed restaurant by giving all his money back to Howard and changes the restaurant's name back to "The Krusty Krab," saying that he got back the love of his "dear friends," that is, until the episode ends with a demand for Squidward and SpongeBob to clean up the mess. Then Mr. Krabs presses the cash register, causing dollar bills to appear in the screen, making it black and the episode ends.
|( ‣ ) Associated production music|
|( • ) Original music|
|( ◦ ) SpongeBob music|
‣ Dingles Regatta - Brian Peters [opening]
• Cha-Ching - Zeus Cervas, Andy Paley [Mr. Krabs sings this]
‣ Furtive Footsteps - Paddy Kingsland [businessmen enter the Krusty Krab]
‣ Unease - Dick Stephen Walter ["Howard Blandy?"]
‣ Romantic Entrance [#23] - Harry Bluestone, Emil Cadkin ["I worship you!"]
‣ The Tip Top Polka/The Cliff Polka - Chelmsford Folk Band ["It's just that... you're rich."]
‣ Dramatic Impact 2 - Ivor Slaney ["Buy the Krusty Krab?"]
‣ Up She Rises - Sam Spence ["It's the blood, sweat and tears of a hard day's work."]
‣ Lap Steel - Nicolas Carr [suitcase full of money]
‣ Historical Fanfare [#31.04] - Gerhard Narholz ["Jumpin' King Neptune!"]
‣ Furtive Footsteps - Paddy Kingsland [Krabs signs contract]
‣ Alekoki - Kapono Beamer [Krabs says he's retiring]
‣ Hawaiian Cocktail - Richard Myhill ["Have fun, Mr. Krabs."]
‣ Vibe Sting - Nicolas Carr [Carl the new manager]
‣ Drunken Sailor (b) - Robin Jeffrey, Tim Laycock ["Ah... the sweet smell of a brand new day!"]
‣ Lap Steel - Nicolas Carr ["The Krabby O'Monday’s?"]
‣ On the Beach - Kapono Beamer [Krabs' hobbies/Krabs lying on his bed]
‣ Hello Blues - Sage Guyton, Jeremy Wakefield [Pearl on the phone]
‣ Solo Steel 1 - Jeremy Wakefield [Krabs at the beach]
‣ Vibe Q Sting - Nicolas Carr [metal detector hits something]
‣ Down by the Riverside - Jerry Burnham, Stephen Wade [inside Krabby O'Monday’s]
‣ Dramatic Encounter - Gregor F. Narholz [human resources appears]
‣ Witty Fellow - Gerhard Trede ["Sincere service... with a smile!"]
‣ Dramatic Encounter - Gregor F. Narholz [human resources goes]
‣ Witty Fellow - Gerhard Trede [Squidward leaves Carl]
‣ The Rake Hornpipe - Robert Alexander White [Krabs doing dishes]
‣ Vibe Sting - Nicolas Carr [SpongeBob giggles]
‣ Supernatural 2 [#4] - Harry Bluestone, Emil Cadkin ["They're watching us..."]
‣ Supernatural 1 [#1] - Harry Bluestone, Emil Cadkin [Squidward points to "Help Me" note inside handbook]
‣ Dramatic Cue (f) - Ronald Hanmer [synthetic patties]
‣ Dramatic Cue (e) - Ronald Hanmer ["They wouldn't listen to me!"]
‣ Dramatic Cue (h) - Ronald Hanmer [automated cash register]
‣ Witty Fellow - Gerhard Trede ["Our customers are quite content with the contrived and mediocre."]
‣ Drama Link (b) - Hubert Clifford ["Do you know what's in that Krabby Patty you're eating?"]
‣ Drama Link (g) - Hubert Clifford [customers run out]
‣ Dramatic Cue (e) - Ronald Hanmer ["Rules!"]
‣ Dramatic Cue (c) - Ronald Hanmer ["I'll show you automated!"]
‣ Furtive Footsteps - Paddy Kingsland [Blandy returns]
‣ Unknown Track 40 - Nicolas Carr [alarm goes off]
‣ Grass Skirt Chase - Sage Guyton, Jeremy Wakefield [Krabby Patty machine explodes]
‣ Solo Steel - Jeremy Wakefield [Krabs buys the restaurant back]
‣ When Daylight Shines/Captain Lenoe's - The Folk Players [ending]
- This episode is available on the Lost in Time, Season 4 Volume 1, Complete Fourth Season, and The First 100 Episodes DVDs.
- "Selling Out" was ranked #9 during the Best Day Ever event on November 9–10, 2006.
- As of June 10, 2019, The Internet Movie Database (IMDB) gives this episode a rating of 7.7/10 based on 314 ratings by users. TV.com users give this episode a rating of 7.9/10 based on 169 votes.
- C.H. Greenblatt voices Carl, manager of the Krabby O'Monday's. This may be a reference to Greenblatt's first name, Carl. It should also be noted that Carl is a fish-caricature of Greenblatt.
- This was the first episode Zeus Cervas worked on as a writer and storyboard director.
- This was the first episode Erik Wiese wrote since "Fools in April" from season 1 and his first episode as a storyboard director since "Mermaid Man and Barnacle Boy III" from season 2.
- This episode was also the first of a total of 10 episodes that Zeus Cervas and Erik Wiese worked on together as writers.
- Despite mistreating his employees most of the time, Mr. Krabs is shown that he wouldn't stoop so low as to make fake food or physically threaten the staff.
- When the Krabby O'Monday's is being flooded by the Synthetic Krabby Patties, it is revealed that Mable wears a wig.
- This episode marks the first time Mr. Krabs works at the Krusty Krab (though it was called the Krabby O'Monday's) as an employee.
- The customers do not seem to notice that the patties were synthesized until Mr. Krabs reveals it.
- This episode was the first one to use the Crowd Scream sound effect in four years, the last usage having been in "The Smoking Peanut" from season two.
- In Italy, this episode came out the same day as The SpongeBob SquarePants Movie.
- This episode, along with "Dunces and Dragons," "Funny Pants," and "Mermaid Man and Barnacle Boy VI: The Motion Picture" were the last episodes to have a VHS release.
- When this episode was first broadcast on Nickelodeon in the US, it was not accompanied by another episode, making it the first time this had ever happened during its first US broadcast, due to time constrictions.
- Krabby O'Monday's is possibly a cross between the fictional Krusty Krab and real-life casual dining restaurants like O'Charley's, Beef O'Brady's, and especially TGI Friday's. The employees all wear colorful lapel buttons on their vests and the restaurant also has red-and-white pinstripe tables, which used to be a trademark of TGI Friday's.
- The trailer that has the suitcases full of money reads "U Pull" on the side. This is a parody of U-Haul.
- At some point, Mr. Krabs says that he does not know how to ride a bike, yet earlier in the episode, when he is singing the song of the photo album with Pearl, one of the photos shows Mr. Krabs teaching Pearl how to ride a bike.
- When Mr. Krabs sings about sounds and sights, he slams a bird in his book. This, however, does not make sense because birds do not live underwater.
- All the customers flee after they see the gray gunk they are eating. However, when Krabby O'Monday's gets flooded with the gunk, all the customers are back in the restaurant.
- Once Mr. Krabs asks Blandy "Do I still get the money?," Blandy says "Of course," however, the closed-captions read "Yes."
- After Pearl kicks Mr. Krabs out of the house, he searches for metal on the beach with his metal detector. However, he walks into Krabby O'Monday's in the middle of the beach. When he looks up at it, he is suddenly at the Krabby O'Monday's parking lot.
- Frank has a female voice when he says "What did he say? Garbage?"
- All the customers scream when they run out of the Krabby O'Monday's, but their mouths are closed.
- The boat is parked in front of the restaurant, however, Mr. Krabs passes the restaurant again when he drives away.
- The human resource room is called the HUMAN RESOURCE ROOM, although most of Bikini Bottom's citizens are fish, so it should be a FISH RESOURCE ROOM.