The Big Scoop / Pipe Down - S3-E10
Continuity mistake: The meteor seems to jump back and forth - it would have hit before Timmy started charades with his fairies.
Action Packed / Smarty Pants - S2-E4
Continuity mistake: In "Smarty Pants", when the academic game ends the score is Dimmesdale 100 and Snerd 99, but right when the game ends it zooms out on the game and both teams have 0 points.
Odd Squad/For Emergencies Only - S6-E4
Continuity mistake: In "For Emergencies Only", Mr. Crocker's hair is sent back from the pop quiz, and in the next shot, it's back to normal.
Odd Squad/For Emergencies Only - S6-E4
Continuity mistake: When the "Odd Squad" is in Mama Cosma's house for the first time, there is a picture of her by the door. The second time they come, it's gone.
Mighty Mom and Dyno Dad / Knighty Knight - S2-E9
Continuity mistake: In the end scene of Mighty Mom and Dyno Dad (the fight scene), notice the sky is a night sky but later when they loose their powers, Timmy's mom says let's enjoy our nice lunch and it suddenly becomes midday.
Wishology! 'The Exciting Middle Part' - S7-E2
Continuity mistake: Timmy and Mark are swimming through the sewer to escape the Chester and AJ impostors and escape through the top. When they land outside of it, onto Timmy's front yard, they are completely dry.
Smart Attack/Operation F.U.N. - S5-E15
Continuity mistake: In "Smart Attack", the scientists in the audience blow up, scattering shoes, glasses and clothing everywhere. In a few shots, after Timmy's dad is changed back to normal, all the clothing and accessories disappear.
Smart Attack/Operation F.U.N. - S5-E15
Continuity mistake: In "Smart Attack", Timmy's dad burns a plate of food right in front of Timmy. In a few shots, the plate disappears.
Continuity mistake: In "For Emergencies Only" were Timmy is in Mr. Crocker's classroom, the board says, 'Pop Quiz Today'. 'Today' is underlined. In the next shot, nothing is underlined. After those two shots, it is all underlined.
Continuity mistake: In 3-8 "The Secret Origin of Denzel Crocker", it showed that Mr. Crocker was 40 years old. (They went back 30 years to his childhood, and he was 10 then.) But in this episode it showed that he was 53 years old. (Everyone aged 50 years, and he was 103. 103-50=53.).
Information Stupor Highway - S3-E1
Continuity mistake: When Timmy, Mom, and Dad are writing the love letter to Trixie, what they are typing doesn't match with what their writing.