When Caleb's father tells him that Caleb's mother was the one who did the Love Dare, the two men are on a long path in the middle of the woods, at least several hundred yards from Caleb's house. Caleb, an athletic fireman, immediately sprints back to his house to apologize to his mother. However, his father, an old man nearly twice his age, arrives at the house about 10 seconds behind him and is not even out of breath.
Walking toward the cross for the father and son talk, the actors pass behind a huge tree about 20 feet from the camera, then emerge perhaps 100 feet away from the camera, throwing the perspective way off.
When Michael tells Caleb that Catherine is in the fire truck bay, he is wearing a shirt with pointed pocket flaps. Once Caleb arrives to the fire truck bay, he is wearing a shirt with straight pocket flaps.
When the Catherine drives up to the firehouse to tell Caleb she loves & forgives him, the bays are all full and no trucks are in front of the bays, but when he comes out to see her the 2 bays are empty and the trucks are sitting out front.
In the scene where Wayne is about to drink the hot sauce, Wayne's seating position changes. There is a moment where he is sitting closer to the table in one camera angle. The camera angle changes to a close-up shot and Wayne is clearly sitting upright.
In the train scene, they are unable to stop the train so they have to lift the car off the tracks. The Train passes at full speed (or what we deem to be full speed). At the very end of the sequence, in an areal shot, we see the train on the other side of the crossing. It could not have stopped that close to the emergency scene if it was going at 'full speed' when they were moving the car off the tracks.