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.
Continuity mistake: When Pearl gives SpongeBob the new costume for the Krusty Krab, she gives SpongeBob a mirror. In the mirror, Squidward appears and tells him not to accept the costume. If you notice, Squidward is at the LEFT of SpongeBob. Because is a mirror, in the real life he would be at the RIGHT of SpongeBob. When a shot is shown of SpongeBob and Squidward, you can see that Squidward isn't at the RIGHT of SpongeBob, he's at the LEFT.
Continuity mistake: When Spongebob is outside, and he takes out his "to do list" at first he is holding it with his right hand, but when it shows the front of the paper, you see that it is his left hand. Then it is his right hand again.
Continuity mistake: In Something Smells, when Spongebob jumps on the car and says "am I ugly" you see the guy holding on and he is sitting on the left side of the car, but the next shot of him, he is holding on and now on the right side of the car.
Continuity mistake: In "Something Smells", Patrick enters Spongebob's home and finds him playing an organ in his library. In the wide shot, it show Spongebob not wearing any glasses. However, the next shot shows him from the back wearing glasses.