
Mermaid Man and Barnacle Boy III / Squirrel Jokes - S2-E4
New this weekOther 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
New this weekOther 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
New this weekOther 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
New this weekOther 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
New this weekAudio 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
New this weekContinuity 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
New this weekOther 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
New this weekOther 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
New this weekOther 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
New this weekAudio 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)

Shuffleboarding/Professor Squidward - S6-E17
New this monthOther mistake: Shuffleboarding: When the jail explodes and all the fish fall to the ground, one fish hits the ground and then disappears mid-shot. (00:10:45)
Jellyfishing / Plankton! - S1-E3
Continuity mistake: In Plankton! When Plankton pulls out a radio player to play his evil music on SpongeBobs pillow, it has disappeared when Spongebob wakes up. SpongeBob didn't move on it.
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.

Best Day Ever/The Gift of Gum - S4-E20
Revealing mistake: When Squidward says "I suppose if you haven't fixed my clarinet, the concert would have been a bust", Sandy's tail is the same color as her suit.
SpongeBob Meets the Strangler / Pranks a Lot - S3-E20
Plot hole: 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.
SpongeBob Meets the Strangler / Pranks a Lot - S3-E20
Plot hole: 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.

Revealing mistake: In "Not Normal" when SpongeBob says "Hmm. This video tape should help," his left arm is missing. (00:01:25)
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.
Plot hole: In "Once Bitten", Mr. Krabs never unlocks the doors to the Krusty Krab, but at the end of the episode, Squidward enters with no problem.
Suggested correction: Maybe Squidward has a key to the Krusty Krab that Mr. Krabs doesn't know about.
He could still have a key, but we don't see it.
Whether or not Squidward owns a key to the Krusty Krab is beyond the point of the mistake here. The point is that Squidward is able to walk into the Krusty Krab despite the doors being locked, and he doesn't use a key or anything else to unlock them. He just pushes them open.
Maybe the doors were not locked properly.