Corrected entry: Spongebob's house is round from the outside, but inside it is not.
Jellyfishing / Plankton! - S1-E3
Corrected entry: In Plankton, when Plankton is controlling SpongeBob's mind, at the end when he jumps out on the patty, how can SpongeBob walk away if he still has that thing on his brain.
Something Smells / Bossy Boots - S2-E1
Corrected entry: In Something Smells, at the movie theater when Patrick yells "LOOK AT IT", there are only about 30 people, but about 100 people run out.
Correction: There wasn't anything to suggest there was only the one theatre inside so the other people could be from the other theatres inside or even people in the building but not in the cinema. Even if there was only one theatre the number of people would have mostly likely deliberately been increased by the director to show how bad the situation was.
Big Pink Loser / Bubble Buddy - S2-E3
Corrected entry: Spongebob shrinks down after Patrick's suggestions to get an award. When Spongebob shrinks down and says "The smallest you can think of", his voice is high-pitched, but when Spongebob agrees with Patrick's suggestion about a job at the Krusty Krab, his voice is normal. It should be tiny until he grows back.
Correction: It is quite possible that Spongebob put on the high voice intentionally, and then decided to use his normal voice again.
Jellyfish Hunters / The Fry Cook Games - S2-E16
Corrected entry: What country is Spongebob representing in "The Recook Games," anyway? He starts out in a shirt that looks like the flag of Japan, and then his Speedo seems to have the flag of France on it.
Correction: He's representing the Krusty Krab.
Sandy, SpongeBob and the Worm / Squid on Strike - S2-E18
Corrected entry: In "Sandy, Spongebob, and the Worm," when the town is in the Krusty Krab talking about how to protect themselves from the Alaskan Bull Worm, the pink fish with the red bikini is in the crowd twice and there's another fish that's in there three or four times.
Correction: This happens in animated shows plenty of times. These characters are 'stock' characters, and aren't at all useful to the plot, and are therefore used more often than characters that actually have bigger parts. This is not a mistake - however, if someone such as Pearl or Larry were to be 'duplicated', that would be a mistake, because they actually have recurring and speaking parts.
Jellyfish Hunters / The Fry Cook Games - S2-E16
Corrected entry: In "The Frycook Games," when they make jokes involving the audience, (such as when that one section gets turned into fish sticks) look around at all of the audience members. Many of the same fish are in there twice, or more.
Correction: Well illustrators often use stock characters for their animated shows, and these fish are just 'extras' and can therefore be 'duplicated' in the audience. For example, the fish with the British accent (as in Band Geeks), often shows up in many different parts, as well as the brown fish that had a song in the episode about Jelly Patties. It's not a mistake, because the illustrators do this on purpose. However, it would be strange if some main-er and more unique (such as Larry the Lobster and Mrs. Puff) characters were 'duplicated'.
New Student Starfish / Clams - S3-E14
Corrected entry: In "Clams," after they've been searching for the Clam for I think three days, Squidward has grown a beard and head of hair. But in other episodes, he's upset because he's bald. If he can grow hair, then why did he rip it all out?
Correction: This was used to show how irrational Mr. Krabs was being about how long they would have to stay out there and find the clam.
SpongeBob's House Party (aka Party Pooper Pants) - S3-E10
Corrected entry: After Spongebob is arrested, he comes back to his house in the morning. When he gets to his bedroom and sees Gary, he says 'Goodnight Gary', and turns off the light.
Correction: This is because SpongeBob had been up all night and was going to bed. When people go to bed even during the day they will say goodnight out of habit of saying the phrase when they go to sleep.
Corrected entry: Spongebob Doesn't have fifty cents for the bus but has the same amount for candy.
Correction: Spongebob never said he didn't have the fifty cents he just didn't remember which pocket that he put it in and while searching for it he kept hitting the bus driver with his balloon and out of frustration the driver tells him to forget it.
Jellyfishing / Plankton! - S1-E3
Corrected entry: Patrick's rock isn't supposed to be hollow.
Correction: Patrick's rock itself is never hollow but on occasion the ground underneath is dug out.
Help Wanted / Reef Blowers / Tea at the Treedome - S1-E2
Corrected entry: Squidward spray painted "loser" pointing to his own face (which he also spray painted) on one of the front doors of the Krusty Krab. When Spongebob first goes into the Krusty Krab, the drawings (or whatever they were) disappear.
Correction: Squidward was actually cleaning it up, that's what the piece of cloth he is holding in his other hand is for. Although Squidward is not happy to work at the Krusty Krab, he is far too proud and too vain to insult himself in such a manner. Also, don't forget that Squidward is not very popular, so most likely the graffiti was from somebody else.
Corrected entry: Sandy has a suit on when she's walking around Bikini Bottom. On the square on the suit, it either has 3 dots OR an acorn. Does it change by itself?
Correction: Sandy probably has 2 suits.
Corrected entry: In "Jellyfishing," Squidward comes home and Patrick stupidly says "Merry Christmas." But he didn't know about Christmas until the episode "Christmas Who?"
Correction: "Christmas Who?" is actually a flashback - Patchy the Pirate, in the present, is telling the story of Bikini Bottom's first Christmas. Therefore, the time that Patrick learns about Christmas could have actually occurred sometime before the story in "Jellyfishing", thus explaining Patrick's knowledge of the holiday.
Dying For Pie / Imitation Krabs - S2-E6
Corrected entry: When Spongebob says "eyelashes" he should have said "eyebrows since thats whats missing.
Correction: This is true, but his eyelashes were missing also, so it's more of an error in the animation.
You Wish ('Shanghaied') / Gary Takes A Bath - S2-E11
Corrected entry: It's been established that Patrick doesn't have a nose. So then the perfume department in "Shanghied" should not affect him.
Correction: It doesn't effect his nose, it effects his eyes and mouth.
Corrected entry: Spongebob is repeatedly referred to, as a square, when in actual fact, the largest surface area on Spongebob which holds his face, is an irregular trapezium.
Correction: Well that would hardly sound as good in the theme song, would it? He is actually a cuboid, but I assume they're trying to keep the shapes simple so kids can understand it - it is a kids' show after all.
Besides, people don't refer to SB himself but his trousers, hence the name "Spongebob Squarepants."
Your Shoe's Untied / Squid's Day Off - S2-E2
Corrected entry: In "Your Shoe's Untied," Spongebob comes into the Krusty Krab and says "I can't let Patrick see that I still haven't tied my shoes." Patrick and other customers are eating. But Spongebob is the only Krusty Krab frycook, so how could they be eating if he wasn't there.
Correction: In the episode "Just One Bite" we see that the restaurant has a Patty Vault in which they keep ready-to-serve Krabby Patties. We can assume that even if they don't have SpongeBob to cook patties, they do have some ready-made ones that they can simply get out and serve to the customers.
Pre-Hibernation Week / Life of Crime - S2-E13
Corrected entry: In "Pre-Hibernation Week," when they're swimming in the ice-cold water, Sandy says she has three days left until hibernation. But then, Patrick comes home with groceries and asks, "Who are you people?" to everyone under his rock, indicating that Spongebob had only been under the rock while he was on a daily errand. So it had only been a few hours since Sandy said she had three days left, but yet she starts hibernating.
Correction: Squidward says at one point during the search, "How about a break? We've been at it for days." This gives evidence that the fish had been searching (and Spongebob had been hiding) for the remainder of the three days, and by the time Sandy found him, the time was up and she fell asleep.
Born Again Krabs (aka A Penny Saved) / Safety Freak (aka I Had An Accident) - S3-E17
Corrected entry: In "I Had An Accident", there's one scene where Sandy sticks her head into Spongebob's porthole to yell at him. The porthole is NOT open, therefore Sandy would've hit her head in the porthole window.
Correction: Maybe he doesn't have glass at his house.
Correction: It might be that some parts of the house have thicker and thicker walls, so that the interior has corners, while the exterior is circular. I have an attic, where from the outside it looks like it should have a ceiling that is 'pointed' upwards, but is actually a normal looking room. So basically in Spongebob's house, an overheard shot minus the roof might look like a rectangle (or many rectangles) in a circle. (Another thing - the hallway that contains two sets of stairs opposite each other that spiral down and lead to the kitchen IS circular/cylindrical).