SpongeBob SquarePants (1999) - 275 mistakes in entire show

Character mistake: In "I Heart Dancing", the lady at the Krusty Krab tells Spongebob the dancing audition is the next day. Later, Spongebob is practicing at Squidward's house for a whole night, and the next morning Squidward says they have one more day to practice, even though the audition should have been that day.

Character mistake: In the beginning of "Born Again Krabs" Spongebob only has one bill in his hand, a 5 dollar bill. When he goes to his house and comes back, he says he found 68 cents. Therefore, he has 5 dollars and 68 cents. However, he has two dollar bills and a few pennies in his hand, which cannot be made into $5.68.

Continuity: At the start of "The Thing" the walkway to Patrick's house is missing.

Continuity: When Sandy and SpongeBob are climbing the mountain at the beginning of "Pressure," when Sandy pushes the rocks down at SpongeBob, there were two big ones holding them that vanish. You could say that she pushed them down too, but remember that they were different colours than the smaller ones.

Revealing: In "Krabby Kronicle," when the female fish takes a copy of The Bottom Feeder, the pile of newspapers stays the same.

Continuity: The broom that Patrick throws on the ground in Big Pink Loser disappears soon after.

Other: In "Krabby Kronicle," when the two scientists exit Sandy's air dome, there are bubbles trailing behind them.

Continuity: In "Plankton", when Plankton says tomorrow is his birthday, he is near Spongebob's thumb. When the camera zooms in on Plankton, he is instantly in the middle of Spongebob's hand.

Audio problem: In the beginning of "Shanghaied" during the Patchy the Pirate segment, Patchy says, "Roll the cartoon" but his mouth obviously says something else.

Character mistake: In "Plankton" when Spongebob is in Plankton's lab, he says the ingredients in a Krabby Patty. He doesn't mention the secret sauce.

Continuity: In "Plankton", when Plankton is controlling Spongebob, Spongebob goes to put his pants on, but Plankton has him walk through them. As they're walking towards the pants, the tie is red. As they're walking through the pants, the tie turns black. As they walk away from the pants, the tie is red again.

Audio problem: In "Plankton" in the beginning, when Spongebob is outside with Mr. Krabs, Spongebob laughs. His laugh sounds different that how it does in the rest of the show.

Audio problem: In "Jellyfishing", in the beginning, when Squidward walks out of his house with his bike, Spongebob says "Hey, Squidward" but his mouth is saying something different.

Audio problem: In the beginning of "The Smoking Peanut", Spongebob takes his hat and spits it in the air like Clamu would do. Before he puts the hat in his mouth, he says, "a cannonball", the camera is on Spongebob and his mouth isn't saying that. He has his mouth open to put the hat in his mouth.

Plot hole: Ep 3-21 Spongebob Meets The Strangler / Pranks A Lot: When the invisible Spongebob and Patrick scare Sandy, they are using a sheet to appear as "ghosts". However, the form of the sheet reveals that they don't have their helmet bowls on. How could they survive in the treedome that time? They sounded fine, not dehydrated.

Continuity: In "Procrastination" when Spongebob is moving back and forth on his chair while writing his essay there is no pencil on the desk, but when he goes back to work on the essay there is.

Plot hole: 3-21: Spongebob Meets The Strangler / Pranks A Lot, in "Pranks A Lot", Patrick and SpongeBob scare Sandy. When Sandy runs, gets into her rocket and flies away. When she moved bubbles appeared meaning there's water in her tree house. There's no water in there in other episodes because she's a land animal and breathes air.

Continuity: In the episode "F.U.N", the chum bucket is not across the road from the Krusty Krab, but in every other episode it is.

Continuity: In "Bubblestand" after Squidward blows the huge bubble, he tells Spongebob and Patrick that the ability to blow bubbles is in his genes. If you look at the position of the bubblestand sign, the sign is facing the direction Squidward is talking. The sign had always been facing the street, which means that Squidward was actually talking towards the street, when Spongebob and Patrick are actually to his right.

Continuity: In Jellyfishing, when Patrick puts the net in Squidward's hand, at first it is in his left hand, but when he gets the jellyfish on the king jellyfish, it is on his right hand.