While SpongeBob is making Krabby Patties, he sings a song about how much he loves them, but stops in the middle and, while Squidward is stacking cups (in the form of a triangle), inhales air. Right after Squidward finishes the triangle of cups, SpongeBob (full of air) looks to his left and exhales all of the air, which wrecks the cup pyramid.. This annoying Miss Gristlepuss is causing Krabby Patties to be banned. Mr. Krabs causes the Krusty Krab to be closed by threatening Miss Gristlepuss with a French fry strainer and insulting her by calling her a disgusting old prune. Meanwhile, Plankton at first thinks Mr. Krabs changed the name to "The Closed Krab," but soon figured out he could take advantage of the moment and went out to celebrate. Mr. Krabs's archenemy soon discovered in surprise that the Krusty Krab has secretly been reopened at SpongeBob's Pineapple. He threatens Patrick who was asking Plankton for the "password" while finding that his threats make up the password. While Mr. Krabs was checking for cops, he goes to check on SpongeBob who was afraid of becoming arrested for making an illegal product. Mr. Krabs forces SpongeBob to work otherwise there would be weekends off. Plankton discovers Mr. Krabs is doing his regular business "under the table" and calls the cops. In the blink of an eye, they arrive to clean up the Krabby Patties and arrest the employees. Miss Gristlepuss trips and a Krabby Patty dropped into her mouth which made her love the sandwich and forgave the Krusty Crew, she decides not to send SpongeBob and Mr. Krabs to jail and unbanned Krabby Patties, she decides to reopen the Krusty Krab. Again, Plankton's plans failed and he hides inside one of the Krabby Patties only to be eaten by Miss Gristlepuss.
I can turn into a skyscraper!
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The Viking hat that Mr. Krabs wears when he greets TUOOFATTAFAD was originally going to have a joke surrounding it. It would have been something to do with whom Mr. Krabs expected to be on the bus.
Andrea Martin's line were either recorded through the phone or in New York and sent to Nickelodeon Animation Studio. The commentary this information comes from is not very clear on which it was.
Al Priss' design was based off casting director, Maryanne Dacey's late brother-in-law, whom was also a cop. It is implied that he died sometime before the episode premiered.
When SpongeBob is under his table, Mr. Krabs says that he will make SpongeBob take weekends off if he does not continue cooking Krabby Patties, but in "SB-129," he is off on Sunday, which is the weekend. Mr. Krabs must have meant the entire weekends.
The episode alludes to the Prohibition Era, with the Krabby Patties representing alcohol and the secret Krusty Krab representing a Speakeasy.
Miss Gristlepuss' husband strongly resembles Duke Nukem.
Also, Miss Gristlepuss' husband say "Hello, This is Al G.," which sounds like algae.
This episode production number marks the 100th episode in the series.
Miss Gristlepuss is voiced by Andrea Martin.
The police cannot make a food illegal, as the police only enforce the law. It is the government that makes the laws. And even then it would take some time to get it passed (if it is even passed). While here, it only took one day to pass.
When Squidward said "Do you want to 'Secret Size' that for $2 more" is a parody of McDonalds and their policy of allowing their customers to 'Super Size' their meal for more money.
The episode is heavily based off the Prohibition era in American History, which was a time when alcohol was illegal in America. The references are:
The banning of Krabby Patties is similar to the outlawing of alcohol
The Secret Krusty Krab is a references to Speakeasies, which were a place where people would secretly get alcohol.
The raid towards the end of the episode is a reference to the raids of speakeasies.
The scene where Plankton has to guess the password is based off a gag done by the Marx Brothers did, where they would make someone guess the password, which was "Swordfish".
When Mr. Krabs is seen greeting Miss Gristlepuss, the Krust Krab door handles are blue instead of yellow.
Whenever Miss Gristlepuss blows her whistle and lets go, the black lanyard and whistle ends at her chest. But when the next scene cuts in her whistle is connected to the thread of her shirt without the black lanyard.
When Miss Gristlepuss and her crew get off the bus, the Krusty Krab sign is located on the street instead of the sand.
The Krabby Patty Plankton is seen hiding under had no seeds.
When Plankton looks out his window to see the Krusty Krab, the road following to the Chum Bucket doors aren't there.
When Miss Gristlepuss meets Mr. Krabs, his belt is missing. In the next shot, he was wearing his belt.
When SpongeBob is singing his song about Krabby Patties, the patties on the stove disappear.
On American airings, after Mr. Krabs meets Miss Gristlepuss, captions said that she was saying "Mr. Grabs" instead of "Mr. Krabs."
When Plankton asked Harold and Nat what was going on, he was wearing a suit. When he went up to SpongeBob's door and talked to Patrick, his suit was gone.
When the police are breaking into SpongeBob's house, Plankton is briefly seen hiding under a Krabby Patty. It is unknown why Plankton did not steal the Krabby Patty like usual.
It is possible that because the Krabby Patties were illegal, he did not want to steal it because he would have gotten arrested for selling them.
When Mr. Krabs went to the cash register to Squidward for misbehaving at Miss Gristlepuss and her crew, he was behind the boat and his body was overlapping the register.
When the Secret Krusty Krab was found by cops, SpongeBob and Mr. Krabs are handcuffed, but when Miss Gristlepuss accidentally falls down and eats a Krabby Patty, SpongeBob's handcuffs disappear.