Continuity mistake: When Napoleon is giving Trisha's mom the dance invitation you can see a car in the reflection on the door. Then when it shows the door again the car is gone.
Continuity mistake: When the uncle and Kip are eating at the restaurant, the uncle's onion rings continuously change position between shots.
Continuity mistake: When Deb comes to sell handycrafts to Napoleon, she has three boxes: a blue one, a red and white one, and a teal one. When Napoleon leaves his house he only has two boxes. But when he gives them to her at school, he has all three.
Continuity mistake: When Kip and Uncle Rico are in the diner, Rico's onion rings keep changing position.
Chosen answer: This is never explained or referenced.