When Drake plays the Gamesphere, the first wired controller is that of an XBOX; however, when he pulls out the second wireless controller, it is that of a Ninetendo 64, which was released years before the XBOX.
When the brothers are together in the bedroom teasing each other with junk food and video games, Drake breaks out the GameSphere. In one frame there is nothing in his back pocket. In the next frame he pulls out a wireless controller that wasn't in there before.
In science class, a blonde girl wearing an orange shirt over blue sleeves sits at the lab table next to Drake and Josh's table, but when the teacher shows the class a human eyeball, the girl sits two rows up next to the black girl in front wearing a black sweater.
Supposedly, Josh runs a blender, but when he grabs and runs away with it, he reveals it isn't plugged in.
If Josh was allergic to cheese balls then he should have had an allergic reaction.
In science class. Drake covers his face with the science book that Josh tells him to put down. Drake does, right on Josh's hand, but can be seen hitting the table near Josh's hand then pulling the book swiftly back before his face. Josh reacts, but the book never touches Josh's hand.
No one should be mistaking "dyes" for "dies." They sound alike but are spelled differently, and people are reading the word.