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Dumb & Dumber (1994) Poster

(1994)

Goofs

Factual errors 

When Mary's husband Bobby is getting out of the police car at the end of the movie he opens the door from the inside himself instead of having to be let out.
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Audio/visual unsynchronised 

When Lloyd is running up to the screens that tells the different flights on it, while he tries to find the flight for Aspen while saying eeny, meeny, miny, mo, he says "mo," but his lips don't move when he says it.
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When Harry and Lloyd are at home, Harry opens a beer and throws the bottle cap on the floor. It makes the sound of hitting a hardwood/tile floor even though all shots of the living room floor show it to be wall to wall carpet.
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The Mexican hitchhiker's guitar playing doesn't match the playing that's heard. Also you can see him stop playing in the middle of the singalong while it audibly continues.
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After the dinner scam, Lloyd tells Harry about the movie he saw. When he mentions the guy getting his throat slit, you can hear Harry speeding the car up, however the background outside does not move any faster.
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Character error 

When Lloyd tells Nicholas about the IOUs in the briefcase, he grabs one and says that it's worth $275,000 when it clearly says $875,000.
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The officers at the scene of Mental's death report that Harry and Lloyd were last seen headed west on I-80 towards Colorado. I-80 does not go through Colorado at any point; it passes north of the state through Nebraska and Wyoming.
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Continuity 

At the beginning of the movie, Harry's van has bucket seats, yet later on when the "gas-man" rides along, he is sitting on a bench seat in-between Harry and Lloyd.
When Lloyd tackles Mary on the hotel stairs, she is wearing black pantyhose. By the time they get to the hotel room, she has mysteriously changed into gray tights.
Harry and Lloyd drive over the same bridge twice on their way to Aspen.
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In the bar, Lloyd grabs the bartender with one hand but the next shot shows him grabbing him with the other hand.
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When Lloyd states that the map says they've only driven about four inches, there's a creek with an unusual tree growing around it. We see the same creek and tree when Harry and Lloyd pick up the "gas man."
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When Lloyd drops Mary off at the airport and hugs her goodbye, in the background there are two men walking towards them. The camera changes to the angle behind Mary then behind Lloyd and then back to the side. When it returns to the side view the two men are farther away but still walking toward them.
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When Lloyd and Harry get stopped for speeding, Harry rolls the window down, even though it was already opened in shots from a moment before.
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When Harry has his tongue stuck to the chairlift, there is frost on the pole when he licks it. Later, when he asks the kids for a cup of warm water, there is none. Then when Mary removes his tongue, the frost is back.
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When Lloyd is in the gas station bathroom and first sees the "For Manly Love" writing on the wall, it says "BE HERE MARCH 25TH AT 2:15AM SHARP". All other shots of the writing say "MEET ME HERE ON MARCH 28 AT 2:15AM SHARP!".
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When Lloyd sees Mary's photo in the newspaper, he struggles to read the headline; he cannot even decipher the word "the" without Harry's help. However, in other scenes he can read perfectly (such as when he reads the graffiti in the men's room or the newspaper clipping in the bar).
When Lloyd is trying on tuxedos, in the shot from the back of Harry's head you see a short cigar in his mouth. In the next shot from behind (when he stands up), the cigar gets bigger.
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In the restaurant, Lloyd's fork is present/absent between shots.
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When Harry and Lloyd are sitting in their apartment, there is a beer cap in the middle of the floor after Larry threw it. In the next shot, it is closer to the couch than the previous shot.
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The Cadillac limo Lloyd is driving at the beginning is from the early 1980s and would have no airbag. The steering wheel is obviously not equipped with one in the shots either. After Lloyd drops off Mary at the airport, he gets back in the car and the wheel has been swapped with an airbag-style one for the scene where it deploys (with an inflated garbage bag of some sort).
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When Harry and Lloyd first arrive at the truck stop, a man with a white hat leaves the diner after the eighteen wheeler passes by. After Sea-Bass spits in Harry's burger, the same man is about to exit again
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When Lloyd drops Mary off at the airport, the interior of the car is different once Lloyd gets back in.
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When Lloyd tells Harry to throw some salt over his right shoulder, he puts the salt shaker next to Harry's burger and fries. The next shot shows the salt shaker behind the basket of Harry's food.
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When Lloyd is sleeping on Harry's shoulder in the van, it seems his head on the left side is leaning on Harry and messes up his hair. When they stop at the gas station, Lloyd's hair is messed up on the right side when he is in the bathroom.
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During the snowball fight it is snowing/not snowing between shots.
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When Lloyd falls off the runway, the Asian man has a smile on his face. You can see it in the glass. But when the camera's on the man's face his expression is wincing.
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After they are both fired, the bottle cap that Lloyd tosses on the floor moves about between shots.
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In the bar scene between Beth and Lloyd, Beth's sweater suddenly changes from buttoned up to wrapped around her shoulders.
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After shooting Harry, Nicholas' gun has the slide locked back, indicating that it is empty. In the next shot the slide is forward again.
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When Lloyd drives Mary to the airport, he is in a car with no airbag. Afterward, we see an airbag deploy when he hits a car.
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When Lloyd encounters the "sweet old lady on the motorized cart", his wallet, which had been left inside the newspaper vending machine, disappears between shots.
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In the opening sequence, the limo Lloyd is driving appears to be around 6 to 8 feet away from the girl on the sidewalk. When the camera angle changes and Lloyd talks to the girl, the limo appears to be only 2 feet away from the sidewalk.
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When Harry and Lloyd both get back from work and they are sitting down, a glass bottle is standing up inside the small end table between the couch and the chair. Later in the scene, the bottle is knocked over.
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When Lloyd, Harry and the "gas man" stop at Dante's restaurant, the water jug on the left on the bar moves between shots.
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At the Preservation Society Party, the wine in Helen's glass changes from near empty to near full.
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After the guys get home from being fired and then crack a beer, there is a phone book keeping the couch Harry is sitting on level. In the next scene the phone book disappears.
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When Harry and Mary are wrestling in the snow, Mary is starting to roll over from having her face mashed into the snow. In the next shot her face is firmly planted in the snow again.
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When Harry and Lloyd are in their hotel rooming talking about meeting Mary at 10PM instead of AM, Harry starts walking out of the room. He stops and turns to look at Lloyd and says, "10AM..". As he says this there is clearly a wall right next to him. When the picture pans out to show Lloyd and Harry, there is no wall remotely close to Harry.
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In the Colorado scenes, the snow coverage on the ground is constantly changing.
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When Harry and Lloyd get pulled over the road are separated yellow lines and when they are actually pulled over the median turns into two solid yellow lines.
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In the bar, Lloyd has two bottles in front of him. The bartender hands him another beer, and there are still two bottles. Later there are four bottles.
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The position of Harry's glass of cola when laughing at the diner.
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The bathroom window in Harry's toilet scene.
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At the ball, when Helen and Harry are talking and in the background, you can see Lloyd's hat is on the bar. A second later when he shows off his butt, he is holding his hat.
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When Harry and Lloyd are traveling from Nebraska to Aspen on the moped there are small wheels on the back of the bike and they come and go from scene to scene.
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After the policeman orders Harry to stop his van his motorbike is beside the van but in the next shot his bike is behind the van.
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Crew or equipment visible 

When Harry is on the toilet at Mary's, the dolly track is visible on the floor.
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When Harry and Lloyd are leaving Rhode Island in the van, a hand can be seen moving the curtain behind Harry's head.
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When the doves appear in Lloyd's dream sequence, we see crewmembers releasing doves while lying on the floor behind two pairs of their own white sneakers.
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When Lloyd asks Mary what are his chances of him and her being together, the camera crew is is reflected in the mirror in the background.
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When Lloyd slides along the airport floor to pick up the briefcase, he stops at a strip of yellow tape which marks the place where he should stand up.
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Errors in geography 

The time of Harry and Lloyd's trip takes place in late March, yet as they pass through Pennsylvania many of the deciduous trees have green leaves. At that latitude trees actually don't start sprouting leaves until late April.
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When first driving out of Rhode Island, they are heading north on Route 146, because you can see the Union Paper building in the shot. In the next shot showing the highway as they are driving, they are on 95 South, passing the "Big Blue Bug", a local pest control company building. There is no way they can be driving on both of these highways at the same time, they head in opposite directions.
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The lift operators at Aspen are wearing Copper Mountain uniforms. Copper Mountain is in a different part of Colorado, over two hours from Aspen.
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In the scene where Harry and Lloyd are on the bed in the presidential suite, crying and blowing their noses with money, they are watching a commercial for Pacific Bell. If they are in a hotel in Aspen, CO there is no way they would have seen that commercial on a hotel TV when the ad is clearly for a company that serves the west coast.
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Just near the end of the film Lloyd and Harry are seen in a desert presumably the Phoenix Desert just days after Mary reunites with her husband. Given that the Phoenix Desert is many miles from Colorado it would take weeks for the duo to get there on foot.
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In the second part of the movie Harry and Lloyd are supposed to be in Aspen. However, that part of the movie was filmed in Breckenridge. The town of Breckenridge has one main street where shops and restaurants are located with streets descending hills feeding into the main drag. Aspen is a town spread out across many blocks with rather busy traffic. This information was confirmed by the public relations director for the Breckenridge ski area.
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After Harry and Lloyd flee Dante's Inferno, an FBI agent states that "they were seen heading west on I-80." The next road you see them on is a rural two lane highway. Not a big four lane interstate like I-80.
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When Harry, Lloyd and Mentalino stop to eat, the sign identifies the stop as the "hottest meals east of the Mississipi." After Harry and Lloyd leave, it is established they are in Iowa, which is west of the Mississipi.
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Factual errors 

Airbags immediately deflate after deployment and do not stay inflated for more than 0.3 seconds as indicated.
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The sign the airport employee removes says Aspen but the airport in Aspen is actually called Aspen-Pitkin County airport.
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Incorrectly regarded as goofs 

On the note left for the "gas man" they misspell Aspen as "Aspin". This was most likely intentional since their lack of intelligence is a major part of the movie.
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Plot holes 

After the FBI rescue Lloyd, Harry and Mary from Nicholas Andre, Beth tells Lloyd and Harry they have been following them from Providence. However Beth and her colleagues were not seen in the film until after Joe was killed and didn't hear of Lloyd and Harry until they escaped.
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When Harry and Lloyd stop to pick up Mental at the side of the road, he claims that he's late for a luncheon. However, he then proceeds to stop for lunch with Harry and Lloyd (although it's possible that he assumed by their behavior that they were too stupid to realize this).
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Apparently Harry and Lloyd are stranded in Nebraska after their van runs out of gas. Lloyd though somehow is able to drive the van to the nearest town and sell the van.
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Somehow the charges against Lloyd and Harry for Joe Mentaliono's death are dropped despite the fact the police including presumably Beth had a warrant for their arrest.
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Mental ends up with Harry and Lloyd by acting stranded. He seemed very confident that they would stop. He also has the hood up in the car and tells his partner to lie in the don't seat. Not only would she not see them leave, but she would have also had to put the hood down to follow him. There is also the question of where she was when Mental dies in the restaurant.
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At the airport, how were Mary, and then Lloyd, able to go to the airport terminal where Mary's plane was without ever going through airport security?
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Revealing mistakes 

When Harry and Lloyd are reading the newspaper about the International Preservation Society, the exact same paragraphs are repeated many times throughout the paper.
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During the tongue scene, when Mary is pulling Harry's tongue off the ski lift, you can see Harry's real tongue right under the fake stretchy one.
The snow in the camp fire scene is obviously fake (fabric and/or plastic).
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When Harry and Mary are making the snowman, there are three pre-formed holes where Mary puts the charcoal and carrot.
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When Lloyd frantically checks the departure boards there is no sign of the airport in Aspen on the departure boards.
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When Harry and Mary are making a snowman, there is pair of skis stuck in the snow with the top hat hanging on them. But they have both changed out of their ski clothes, neither of them are wearing ski boots, and there is no other ski equipment there.
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When Lloyd and Mary are going to the airport, you can see a white van out the rear window. The driver is turning the steering wheel, but he keeps going straight.
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Mary's skiing stunt-double, seen coming to a stop before the snowball fight, clearly has long black hair.
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When the champagne cork is flying towards the owls, the stick turning the cork is clearly visible (DVD Version Only).
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After dropping Mary off at the airport, Lloyd puts the limousine in gear, but instead of putting the car in drive, he puts it in reverse, and then begins rolling forward.
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When Harry's legs catch fire, you can see the burn gel on his pants.
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Outside the airport, after bumping his limo with another car, the airbag inflating towards Lloyd's face correctly originates from the center of the steering wheel. In next scene, while he is fighting with it in order to gain access to the airport, it has been replaced by another kind of a balloon, clearly not coming out from the steering wheel.
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Spoilers

The goof items below may give away important plot points.

Character error 

Harry and Mary spend the early part of the day together and make plans to meet the evening of the same day at 7:45 pm. Later on that night (same day) as the three (Harry, Lloyd and Mary) are being held at gunpoint, Harry says, "Yesterday was the best day of my life. Mary and I went skiing....etc". But it wasn't 'yesterday', it was earlier the same day that Harry and Mary went skiing.
After the FBI charges into the hotel room, Beth identifies herself as Special Officer Beth Jordan. FBI agents are actually known as Special Agents.
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Continuity 

After Nicholas tries to stop Harry and Lloyd from entering the ball and Lloyd sprays Binaca in his eyes, J.P. Shay stands next to him and says that they are the guys who "whacked Mental". The next scene Nicholas is on the stage with the snow owls, but then is instantly off stage and back at the entrance of the room with Shay again.
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After Harry is shot near the end of the movie, he reveals that he is wearing a bulletproof vest. The bulletproof vest, however, shows no damage from the gunshots to the chest.
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After Nicholas shoots Harry and is about to shoot Lloyd, his gun is obviously out of bullets as the slide part of the gun is cocked back and the barrel is exposed. Then in the very next shot, the gun is loaded again.
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Incorrectly regarded as goofs 

Harry throws the salt at Seabass in a Pennsylvania diner. Later the same man attacks Lloyd in a Nebraska bathroom. It's possible that Seabass is a trucker and happens to be in different parts of the country at different times through traveling (the diner and gas station bathroom would not be unfamiliar places for truckers).
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See also

Trivia | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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