Corrected entry: Towards the end of the film after the high school guys had attached cables to Porky's place to pull it down, they blow the horn on their truck to get Porky's attention. When Porky comes out onto the bridge with his henchmen, watch when he takes a swing back with his baseball bat, he accidentally hits one of his men on the nose. The actor tries to play it cool but you can tell it was not part of the script.
Corrected entry: When Coach Brakett is talking to Honeywell on the stairs, she is wearing tights/pantyhose. Yet when they get into the locker room, she isn't wearing any.