Factual error: At the end of the film, when Ursula has Triton's powers, she creates an enormous whirlpool that pulls wrecked ships off the ocean's floor. Prince Eric boards one of the ships that is being swept along with the whirlpool's currents, then turns the rudder hard to steer the ship into Ursula. Not possible - in order for the rudder to change the course of a ship the vessel must be moving faster than the current.
Factual error: When he bats, Jake uses a helmet with no earflap. In 1983, it was instituted that players must wear a helmet with at least one flap; however, it's possible that Jake is exempt from this rule under Major League Baseball's "grandfather clause," which allows any player who played before 1983 to continue using the flapless helmet. (01:34:40)
Factual error: When Jamie and the cop are in the room upstairs and Michael is breaking through the door, The cop shoots ten shots out of a revolver without reloading.
Factual error: At a scene where Ron is in the Veteran's hospital doing physical therapy, it is supposed to be 1968, but the song playing is "American Pie." The song didn't come out until 1971.
Factual error: When Bigfoot is about to drive through the car dealership it squeals tires with a high pitched squeal. IF it could spin those big meats it would be a deep hound dog like bark. (01:40:40)
Factual error: When Stallone pulls over the cocaine tanker, his first shot at the truck is impossibly accurate at about 300 yards with a two inch barrel revolver, which has a functional range of 25-50 yards. (00:05:00)
Factual error: The storyline in Karate Kid 3, based on the happenings and reference points of the first two movies, is supposed to take place roughly about late 1984, or early 1985. However, if you look close at the beginning of the film when Terry Silver drops off John Kreese at the airport, there are several cars that are definitely later 80's models.
Factual error: In relation to the position of the sewage workers shadow, and the way Jason kills him, there is no way that the splatter of blood would have hit the wall the way it does. In addition the blood looks like paint. (01:27:20)
Factual error: When Sylvester Stallone is being thrown in a cell for 6 weeks (in his underpants only), he got out of it (after 6 weeks) freshly shaved.
Factual error: When Diane visits her father in prison, she hands him a pen, but visitors in prison are very closely searched - no way could a visitor give a prisoner a pen of any kind (they're contraband for prisoners as they can be used as weapons), let alone a heavy pen like that one. Even if he were in a minimum-security prison (which his orange jumpsuit seems to indicate he's not) this rule would still apply.
Factual error: When Harry is standing on the ceiling fan, the young boy pulls the lever backwards to increase the speed. If you read the side of the lever, you can see that the boy is actually pulling the lever to the slow direction. (00:40:30)
Factual error: In the scene where Joe Clark and the Vice Principal go to the project buildings to see the young girl's mother, they walk down a short ramp to an apartment. Those project buildings are in Paterson,N.J. (where the story takes place), but walking down that ramp takes you to the boiler room, not an apartment. None of those buildings have apartments like that.
Factual error: Marty is pursuing Biff at the high school as the other Marty pulls up with Lorraine in Doc's car. In the parking lot, the car closest to Biff is a brown 1957 Chevrolet. The front grill and styling are distinct and unique to the 1957 model year. In November 1955, it would be plausible to see a 56 Chevy in the lot, but a '57 is a bit early. (01:16:42)
Factual error: As Toxie is removing the guy's intestines with his bare hands, you'll notice that there's absolutely no blood on the intestines.
Factual error: In the opening scene at the baseball game, the announcer thanks the crowd for coming to see the St. Louis Cardinals. The fans are sitting in yellow seats, but all of the seats in Busch Stadium in St. Louis are red.
Factual error: In the lunch scene outside their office, Larry and Richard are at the food stand and notice Bernie walking into a building. The entrance awning reads "East 70th Street". As they walk away the street sign behind them reads "52nd Street". Apparently they must have superhuman vision which allows them to see 18 blocks away.
Factual error: For someone who has been given one more month (minus the two weeks since her escape from the closed ward) because of a brain tumor Eddie looks way too healthy. (01:03:20)
Factual error: In the shot where Uncle Buck is in the living room dancing with that woman, the song "Laugh Laugh" by the Beau Brummels is playing. However, the 45 we see spinning on the turntable is not "Laugh Laugh". It is a 45 on the Uni label, and the Beau Brummels' 45s were on the Autumn label.
Factual error: An animal that lives in the deep sea cannot live in the open air above the water.
Factual error: In the opening scene when the guys are shooting craps, Little Quick shoots the large man squarely between the eyes. The man wasn't looking downward and it would have been impossible for a 4 foot tall kid to shoot a 6 foot tall man at that angle squarely in the forehead.