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 other mistake in Love Potion #976/J - chronological order
Starring: Rob Paulsen, Debi Derryberry, Jeffrey Garcia, Mark DeCarlo
Continuity mistake: When Jimmy is in his lab, in the shot where the camera zooms into his eye, in the shot just before that shot, notice the digital clock on Jimmy's counter. The seconds part jumps from the 30's to the 40's twice in two different shots.
Sheen: Jimmy, where's the bathroom? All I see is sand and I'm not a cat.
Trivia: In the spy episode where Jimmy, Sheen and Carl are swimming underwater, you can see Spongebob's pineapple next to them.