Roger has a black right eye in one scene. Later that same day, the black eye is gone.
When Skip appears to climb through the window during the fight, the window is closed.
When Skip is telling Jonathan about the time he shot and killed a guy, he reaches into the fridge and takes out an apple with his left hand and and goes to take a bite, when the camera does a close up the apple has moved to his right hand.
Skip politely refuses a sandwich as he and his friends of the dance committee are visiting the all-girl school. After the chaos with the broken vase and the torn blouse, Skip suggests that the students decide on whether to wear costumes....while eating a sandwich.
The hockey player dressed in the green practice singlet is wearing a black Northland hockey helmet. The helmet contains a Canadian Standards Association logo that would not be present on a hockey helmet marketed and sold in Illinois.