At the beginning of the movie, Lewis & his dad show up at Gilbert's house with an enormous trunk on the roof the car. As they are driving down the road, there are a couple of shots where there appears to be no trunk on the car. Miraculously, it reappears when the get to the Adams College campus.
In the scene where the nerds are in the sorority house and they are all crouched down running along the hallway.
At the end of the hallway they all turn right then the end nerd, Poindexter runs head first into the wall. One of the nerds grabs him from around the left corner instead of the right where they all just went.
At the end of the "Nerd Raid " on the Pi house, watch as the guys come running out of the front door. After the last stair step, Poindexter falls flat on his face. Timothy Bussfield still contends that Carradine tripped him.