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.
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.
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.
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.
SB-129 / Karate Choppers - S1-E14
Continuity mistake: When Squidward is in the white place and crashes through the floor, he doesn't have his clarinet before he crashes through the floor. But when he is in the time machine, he has his clarinet.
Jellyfishing / Plankton! - S1-E3
Continuity mistake: 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.
Jellyfishing / Plankton! - S1-E3
Continuity mistake: At the beginning of Plankton., Plankton is very small. Later in the episode, as in the rest of the show, he's bigger and not that small.
The Chaperone / Employee of the Month - S1-E12
Continuity mistake: When Spongebob, in his black suit and long legs, is at the door of Mr Krabs', he used a lever to lower himself down. When we cut back to Spongebob, it's gone.
The Chaperone / Employee of the Month - S1-E12
Continuity mistake: When Spongebob is crying next to the employee of the month wall, (just before he says "How could I have let the quality of my work slip so much?") the order of the pictures is messed up. It goes December, February, January. Then, when we see the close-up of Squidward's face laughing, the order is correct again.
Fools in April / Neptune's Spatula - S1-E19
Continuity mistake: Eventually after Spongebob takes the door wheel handle off, it comes back.
The Chaperone / Employee of the Month - S1-E12
Continuity mistake: In "Employee of the Month", when Spongebob is spying on Squidward, Squidward puts his alarm clock to the left of his bed. When Spongebob tries to get the clock, it is now to the right of Squidward's bed.
Sandy's Rocket / Squeaky Boots - S1-E8
Continuity mistake: When SpongeBob is explaining why he thinks there are aliens in Sandy's Rocket, you can see a plant and rocks. We see a wide shot and it has now disappeared. (00:02:00)
Pizza Delivery / Home Sweet Pineapple - S1-E5
Continuity mistake: After Spongebob's house is gone, Squidward boo-hoos and goes into his house, then sounds happy. He starts throwing streamers and confetti out of his NOT-OPEN porthole. If the porthole was closed, they wouldn't fly out. Similar to some other ones in this show, and one in Fairly Odd Parents.
Culture Shock / F.U.N. - S1-E10
Continuity mistake: When SpongeBob and Plankton jellyfish,SpongeBob catches a jellyfish with no spots. Then it shows the jellyfish with spots or vice-versa.
Sandy's Rocket / Squeaky Boots - S1-E8
Continuity mistake: When Pearl is opening her present the cake disappears.
Continuity mistake: In the scene where Mr. Krabs is saying "this is no game" Spongebob is in his underwear, then it goes to Mr. Krabs and back to Spongebob and he's in his work clothes.
The Chaperone / Employee of the Month - S1-E12
Continuity mistake: Spongebob says that this is the 27th award he has won, yet when he is standing in front of the pictures there are at least 30.
Jellyfishing / Plankton! - S1-E3
Continuity mistake: Spongebob, controlled by Plankton, wasn't aiming directly at Squidward's house, but he eventually breaks through the wall.
Suggested correction: He might not have been aiming directly at Squidward's house at that moment, but after that shot, there is a 5-second shot of Squidward in his bed before SpongeBob crashes through his wall. Within those 5 seconds off-screen, there was time for Plankton (who is controlling SpongeBob) to turn SpongeBob towards the direction of Squidward's house.
Hooky / Mermaid Man and Barnacle Boy II - S1-E20
Continuity mistake: Before SpongeBob takes off his pants, his pants are the only thing that is hooked to the fish hook. Later in the scene, his underwear is hooked as well.
