Continuity mistake: Sleepy Time: When everyone woke up SpongeBob near the end, Pearl is seen without her ponytail, but in the next shot, she has a nightcap on.
Fools in April / Neptune's Spatula - S1-E19
Continuity mistake: In "Neptune's Spatula", Patrick takes a picture of SpongeBob holding the spatula. When this happens, we can see that SpongeBob is a little worried because clouds have appeared there. However, after a while, Patrick shows the picture to Neptune, and we can see that in the picture SpongeBob is smiling and pointing with the spatula.
Something Smells / Bossy Boots - S2-E1
Continuity mistake: In Something Smells, once Spongebob finishes saying hello to all the band people, he says "Is it something I said?". You see him start to walk back but when you see a close up of him, a fire hydrant appears.
Pressure / The Smoking Peanut - S2-E12
Continuity mistake: In The Smoking Peanut, when Spongebob and Patrick are running in to see the oyster, Patrick is on the right, but in the next shot, he's on the left.
Big Pink Loser / Bubble Buddy - S2-E3
Continuity mistake: Bubble Buddy: When Spongebob brings his Bubble Buddy to the Krusty Krab, Squidward's restaurant hat is visible on his head. It is not seen when he looks into Bubble Buddy when he says, "That Bubble Buddy sure looks good."
SB-129 / Karate Choppers - S1-E14
Continuity mistake: When Spongebob throws the Krabby Patties on Squidward's head there are only 6 of them, later there's at least 8.
The Graveyard Shift / Krusty Love - S3-E13
Continuity mistake: When Squidward sees the "ghost", he gets so frightened that hair comes out of his head and his job's hat falls off. In the very next shot, the hair is gone, and the hat is there again.
Continuity mistake: In "Rock Bottom" when Spongebob is on line and the egg cracks, you can see the cracked pieces on the ground and then when he does his (in pants) "Barnacles, tartar sauce" you can't see the egg pieces.
Welcome to the Chum Bucket / Frankendoodle - S3-E2
Continuity mistake: In the episode Welcome to the Chum Bucket, when Plankton is reading a story to SpongeBob, he is interrupted. When he looks up and sees SpongeBob asleep, Sponge doesn't have his Chum Bucket Bucket Helmet on. When Plankton decides not to hit SpongeBob with a mallet and wakes him up, Sponge has the helmet on again.
Pressure / The Smoking Peanut - S2-E12
Continuity mistake: Patrick's popcorn disappears completely after he drops it.
Something Smells / Bossy Boots - S2-E1
Continuity mistake: In Something Smells, when Spongebob is making the sundae, when he says "This sundae is gonna taste great" he has one spoon in his hand, but when he turns around, he has 2 spoons.
Sandy's Rocket / Squeaky Boots - S1-E8
Continuity mistake: In "Squeaky Boots", Mr. Krabs starts hearing squeaky sounds everywhere. Then he goes mad and says he took the boots from SpongeBob. At this point, notice the restaurant floor's colour. Mr. Krabs lifts the whole restaurant, but we can still see some floor (where Krabs is). Notice that now the colour of the floor has changed.
Something Smells / Bossy Boots - S2-E1
Continuity mistake: In Something Smells, when Patrick is helping Spongebob outside with the "mirror test", he pulls out the mirror and you see his face to the side of it. In the next shot he is completely behind it.
Mermaid Man and Barnacle Boy III / Squirrel Jokes - S2-E4
Continuity mistake: In Squirrel Jokes, when Spongebob comes out for his second act, there's a back shot of a crowd, and there is one guy in the front right (from the back view) who is green. There is another front shot of the crowd and the guy completely disappears.
Your Shoe's Untied / Squid's Day Off - S2-E2
Continuity mistake: Spongebob says, "We forgot to change the close sign to open," yet when Squidward walks out throughout the episode there is no sign at all.
The Snowball Effect / One Krabs Trash - S3-E3
Continuity mistake: In the scene where, Squidward accidentally squirts lemon juice in his eye it goes in his right eye but he squints with his left eye.
Suggested correction: In "The Snowball Effect", Squidward squirts the lemon wedge's juice into his left eye and he closes his left eye. There is no continuity error.
Continuity mistake: When Tom and Fred are outside the Krusty Krab, Tom is light green, but later in this episode he is dark green. For more info on Tom: http://en.spongepedia.bimserver.com/index.php?title=Tom For info on Fred: http://en.spongepedia.bimserver.com/index.php?title=Fred.
Mermaid Man and Barnacle Boy / Pickles - S1-E6
Continuity mistake: At the beginning of "Mermaid Man and Barnacle Boy", when SpongeBob and Patrick are watching TV viewing Mermaid Man and Barnacle Boy show, you can see that these heroes have 5 fingers on their hands, as the real human beings. However, when SpongeBob and Patrick meet these heroes, as in the rest of the show, you can see that now, the heroes, have 4 fingers on their hands, as cartoon characters usually have.
Hall Monitor / Jellyfish Jam - S1-E7
Continuity mistake: In episode 1-7, Hall Monitor, Patrick says Spongebob is at the intersection of Conch and Coral, and we then see the street sign. However when we see Spongebob standing on the road, there is only one road, and no intersection.
SpongeBob's House Party (aka Party Pooper Pants) - S3-E10
Continuity mistake: Patchy's hook hand disappears when he is playing the accordian.