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.
The Boss of Me/He Poofs, He Scores! - S7-E14
Other mistake: In "The Boss Of Me", when the indestructible pencil appears, as it slowly rotates, the name "everleady" is already written in red on the side. Then Timmy's dad says "I'll call it the Everleady" as if he's created the name.
Answer: That's just decorative. The gas pedal is always on the right and using the left foot would be quite awkward.
Grumpy Scot