Bubblestand / Ripped Pants - S1-E1
Revealing mistake: In "Ripped Pants", Spongebob plays the guitar and chord changes are heard, but his fingers on the neck of the guitar do not move.
SpongeBob SquarePants (1999)
1 revealing mistake in Bubblestand / Ripped Pants - chronological order
Starring: Clancy Brown, Tom Kenny, Bill Fagerbakke, Rodger Bumpass
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.
Dying For Pie / Imitation Krabs - S2-E6
Mr. Krabs: What's the most important rule here?
Spongebob: No free napkins?
Mr. Krabs: No, the other most important rule!
Spongebob: Only discuss the secret formula with Mr Krabs.
Mr. Krabs: As long as you do that, the formula is safe.
Squidward: I thought the most important rule was why do today what you can put off for tomorrow?
Mr. Krabs: But what's today, but yesterday's tomorrow?
Squidward: What?
Nature Pants / Opposite Day - S1-E9
Trivia: When Spongebob runs off to live with the Jellyfish, Sandy says, "I'll give him a week." Squidward says,"I'll give him 11 minutes." 11 minutes is the length of this episode.
Question: There was supposedly one episode that ended with SpongeBob, Patrick, Squidward, and Mr. Krabs all laughing in a boat. The laughing then silences, eventually to a stop. Then SpongeBob, Patrick, and Mr. Krabs walk out of the boat, and Squidward eventually walks out too. Which episode is this?
Answer: I believe this is the Season 6 episode "Spongicus".