Dumb and Dumber

Factual error: When the airbag blows in Lloyd's limousine, it stays inflated - it should instantly deflate. (00:08:40)

Factual error: Harry's tongue gets stuck to the chairlift, and stays stuck, even though it's not cold enough to see anyone's breath, or for everyone to need their jackets zipped-up. (01:11:30 - 01:13:35)

Factual error: When Lloyd drops Mary off at the airport, he watches her leave and then hits a parked car, inflating the airbag. First, the Cadillac Brougham Lloyd is driving was never available with a driver-side airbag, and secondly airbags are not designed to inflate after such a low-speed impact.

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Mistakes

Continuity mistake: When Lloyd tackles Mary on the hotel stairs, she is wearing black pantyhose. By the time they get to the hotel room, she has miraculously changed into grey tights. (01:28:45)

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Quotes

Lloyd: This didn't come out of our travel fund.
Harry: Oh.
Lloyd: Yeah, I was able to raise 25 extra bucks before we left.
Harry: Where did you get 25 extra bucks?
Lloyd: I sold some stuff, to Billy on 4C.
Harry: The blind kid?
Lloyd: [Laughing.] Yeah, yeah.
Harry: What did you sell him Lloyd?
Lloyd: You know, stuff.
Harry: What kinda stuff?
Lloyd: Few baseball cards, a sack of marbles, [coughs.] Petey.
Harry: Petey? You sold my dead bird to a blind kid? Lloyd, wh- he- wha- Petey didn't even have a head!
Lloyd: Harry, I took care of it.

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Trivia

Trivia: When Jim Carry said "hey want to hear the most annoying sound in the world?" and makes the weird sound. That scene was not in the script (watch Jeff Daniels).

Devin

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Questions

Question: What is the trailer both were watching on TV while they were having some snacks in bed in the Aspen hotel room?

Answer: It was a commercial for Pacific Bell. A telephone company.

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