Revealing mistake: When Lane becomes depressed he goes out to the garage and ties a red cord around his neck and to the ceiling to hang himself. He thinks better of it, but his mother opens the door and knocks him off the steps and he hangs by the cord. If you look closely you can see that there is no cord hung around his neck, he merely holds his hand up and mimics grabbing the cord around his neck. The cord seems to be attached to something on his back. (00:15:40)
Revealing mistake: When Ricky's mom drinks the primer and causes the explosion at Lane's house, the shot of the blown-out window briefly reveals sandbags and wood inside, exposing the setup behind the effect. (01:01:37)
Answer: It was an idiotic diet fad in the mid to late eighties.