
Mermaid Man and Barnacle Boy III / Squirrel Jokes - S2-E4
Other mistake: Squirrel Jokes: When SpongeBob looks in the mirror backstage after finishing his second act, the holes on his face are not reversed in the reflection (one of the holes also vanishes and reappears mid-shot). The second time his reflection is shown, they are reversed. (00:20:18)

Mermaid Man and Barnacle Boy III / Squirrel Jokes - S2-E4
Other mistake: Squirrel Jokes: At the end of SpongeBob's second act, as he tells the crowd, "Thank you, you've been a wonderful audience," he opens his eyes briefly, and they are coloured yellow instead of white as they should be. (00:20:14)

Mermaid Man and Barnacle Boy III / Squirrel Jokes - S2-E4
Other mistake: Squirrel Jokes: Near the end of SpongeBob's second act, he tells the crowd to give a big hand to Sandy, but to clap slowly, because she's a squirrel. Right as he says, "She's a squirrel," the holes on the bottom left of his face disappear mid-shot, then reappear. (00:20:09)

Survival of the Idiots / Dumped - S2-E8
Other mistake: Survival of the Idiots: When SpongeBob and Patrick first try to escape the tree dome, SpongeBob tries to open the door, then says that the door is slippery and frozen shut. SpongeBob's reflection is shown in the ice on the door, but it is not backwards; note the holes on his face. (00:08:43)
Big Pink Loser / Bubble Buddy - S2-E3
Audio problem: Big Pink Loser: After SpongeBob gets a load of awards delivered to him at the Krusty Krab, Patrick gets frustrated and says, "Why can't I do anything right?" But the audio briefly cuts out as he says, "Why," so it sounds like, "Wh - can't I do anything right?" (00:05:09)

Survival of the Idiots / Dumped - S2-E8
Continuity mistake: Dumped: When SpongeBob gives Larry the Snail dinner, Larry is sitting on two books placed on a chair. Then, as Larry smells the food, the bottom book is now facing a different direction. (00:19:54)

Survival of the Idiots / Dumped - S2-E8
Other mistake: Dumped: When SpongeBob first gets mad at Gary for spending time with Patrick, he picks him up and walks away with him. In the close-up of Gary as SpongeBob is holding him, SpongeBob's sleeve is coloured yellow instead of white as it should be. Additionally, the purple spots on Gary's shell are a lot bigger than usual. (00:17:18)

Survival of the Idiots / Dumped - S2-E8
Other mistake: Dumped: After Patrick starts playing tag with Gary and SpongeBob, Gary starts crawling around Patrick's body and does that up until it's dark out. SpongeBob is not wearing a watch on his left wrist, but then he looks at his watch, which suddenly appears on that wrist mid-shot. Then, right before he picks up Gary, the watch disappears. (00:14:06)
Survival of the Idiots / Dumped - S2-E8
Other mistake: Dumped: When Patrick agrees to join SpongeBob and Gary in their game of tag, SpongeBob tags him, and as SpongeBob walks away from him, his right collar leaf turns red for a frame, then the space between his tie and left collar leaf turns brown for another frame. (00:13:32)
Survival of the Idiots / Dumped - S2-E8
Audio problem: Survival of the Idiots: After SpongeBob and Patrick unfreeze the door with their breath, Sandy sees them from her window and says, "Oh look, it's SpongeBob and Patrick," but if you look closely, her mouth is not moving. (00:11:48)
The Secret Box / Band Geeks - S2-E14
Audio problem: At the end of "Band Geeks" when everyone is playing "Sweet Victory" at one point Mrs. Puff is shown playing the guitar. When this happens, you can see the others in the background not doing anything, even though their instruments are heard.
Procrastination / I'm With Stupid - S2-E19
Continuity mistake: 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.
Suggested correction: The pencil is sitting to the right of the paper the entire time. It's hard to notice at first, but it's there.
You Wish ('Shanghaied') / Gary Takes A Bath - S2-E11
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.

Revealing mistake: At the end of "Wormy", Patrick's eyes are missing.
Jellyfish Hunters / The Fry Cook Games - S2-E16
Plot hole: As Spongebob is trying to let the Jellyfish out of their enclosure after discovering what Mr Krabs is doing to them, Krabs says, "That door will only open if I say...open." Then he suddenly realises what he's said and the door opens. How come the door didn't open when in his sentence he first said open? The door didn't activate itself until he said open the second time.
Suggested correction: Two likely explanations: 1. He said it more the 2nd time. 2. There was a delay.

The Secret Box / Band Geeks - S2-E14
Continuity mistake: When SpongeBob is sneaking to Patrick's house, Squidwards house is missing.
Something Smells / Bossy Boots - S2-E1
Continuity mistake: In "Something Smells," when SpongeBob is playing the organ at night, he turns around and his glasses are on. In 2 of the 3 shots, the glasses disappear.
Pressure / The Smoking Peanut - S2-E12
Continuity mistake: In "Pressure" right before they all jump on land Squidward has 6 legs, but when he gets on land he has 7 legs.
Continuity mistake: When everybody comes to Squidward's house to persuade him to write a letter, you see that all the paper and pencils and bottles on the ground disappear.
Grandma's Kisses / Squidville - S2-E9
Continuity mistake: When Squidward parks his bike next to the store, he goes inside, and when he goes outside, his bike is gone.