Other mistake: After Cindy says yes to Jimmy's proposal, he jumps with excitement until he realises what he did and screams "no" very loudly. Cindy is walking several feet away. How did she not hear him?
The Adventures of Jimmy Neutron: Boy Genius (2002)
1 mistake in Love Potion #976/J - chronological order
Starring: Rob Paulsen, Debi Derryberry, Jeffrey Garcia, Mark DeCarlo
Cindy: Origami - the ancient art of Japanese paper folding. I will be making the most difficult of all origami sculptures - a snow monkey...
Jimmy: Actually, paper folding originated in China...
Cindy: ...riding a flying dragon...
Jimmy: ...in the second century CE...
Cindy: ...while drinking tea...
Jimmy: ...and was brought to Japan...
Cindy: ...on a ladder...
Jimmy: ...in the sixth century!
Cindy: ...in December!
Miss Fowl: Cindy, I didn't know you and Jimmy were doing your report together!
Who's Your Mommy/Clash of the Cousins - S3-E9
Trivia: One of Jimmy's Uncle's (Baby Eddie's father) is a self caricature of the show's creator, John A. Davis.