Factual error: In the episode Catman Meets The Crimson Chin., When Timmy guesses the password to release Cosmo and Wanda he types CAT notice that where he hits the keys are not in the right position for typing CAT.
Factual error: When the characters in this cartoon are floating, the shadow circle on the ground is smaller when they are higher and bigger when they closer to the ground.
Totally Spaced Out / The Switch Glitch - S2-E8
Factual error: Based on the direction the car was going, when Timmy's parents drop him off at the fun place that Timmy would soon hate, they were driving on the WRONG side of the road.
Fool's Day Out / Deja Vu - S2-E12
Factual error: In Deja Vu, after Vicky steals Timmy's Cosmo watch, she redoes the time to when it was after school. Vicky redoes the time so that a million cats appear to torture Timmy. They throw him out a window which really has solid glass and no sliding doors. He should have been hit onto the window.
Shiny Teeth / Odd Odd West - S2-E15
Factual error: When Dad gives Timmy an "I Made My Dad Richer" badge made out of a Sheriff badge, the word "Sheriff" is at the top. Shouldn't it be at the middle of the badge?
The Secret Origin of Denzel Crocker - S3-E8
Factual error: Each time Timmy jumps through time, he goes back 10 years from 2002 (1992, 1982, 1972). However, some of the 80's references, such as Miami Vice, Flashdance & Back To the Future all came out after 1982.
The Big Scoop / Pipe Down - S3-E10
Factual error: After Timmy makes his wish of having no sound, and he finally wakes up, the clock said 7:42 (before we see Timmy waking up), but when he walks there, it read 7:43, then jumped to 7:44 on the same shot.
A Case of Dairy-Uh / Lights, Camera, Adam - S3-E13
Factual error: The man that Vicky has a crush on (or something like that) drinks his tea, but the level doesn't go down.
Vicy Loses Her Icky / Pixies Inc. - S4-E4
Factual error: In the final frenzy at hole 18 (at least that's what I called it), the ball falls, but when we see the ball again, it starts rolling. Shouldn't it have bounced?
Vicy Loses Her Icky / Pixies Inc. - S4-E4
Factual error: In "Vicky Loses her Icky", when evil Ms. Waxelplax nails up the classroom door, the nails and holes are all crazy and do not match places (using a mirror, that is).