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
Sheen: Jimmy, where's the bathroom? All I see is sand and I'm not a cat.
Who Framed Jimmy Neutron?/Flippy - S3-E14
Trivia: The theme song during the title screen and throughout the episode "Who Framed Jimmy Neutron" sounds similar to the theme song for the show "Cops".