During the part at the first of the movie where the two main characters are looking for someone to replace their principal to be Dr. Vernon Baxter. They find some hobo (Kevin Nealon) laying in the grass, and they talk to him a little bit. Finally he agrees to be their principal but for one thing, the kid's drum sticks. He grabs them and plays them a little on the trash can. (Now! Here's the slip-up!) The hobo is holding both sticks in his hand, and when the camera is facing the kid, the tips of the sticks are up. But whenever the camera faces the hobo, the bottoms are pointing up. These are some freaky sticks here. It does this two or three times during this scene, so I don't think you'll miss it.