Trivia / Dumb and Dumber To

• Channel Hop: This film was distributed by Universal after Warner Bros. refused to distribute the film. Fortunately, New Line Cinema (sister company of Warner Bros. and distributor of the first film) was still attached, but credited as a production company.
• Dawson Casting: 59 year old Jeff Daniels and 60 year old Kathleen Turner play Harry and Freda, who are supposed to be in their late 40s. Somewhat averted with Jim Carrey whose 52 meaning he's the closest in age to his character, Lloyd.
• Dueling Dubs: In Latin America, there's three dubbed versions: One for Argentina and two other ones dubbed in Mexico. The Argentinian dub was the one used in Latin American theaters (even in Mexico, when non-Mexican dubs are barred from being shown in the theaters of that country, oddly enough), while the Mexican dubs are used exclusively in home video releases.
• The Other Darrin:
  • In the Japanese dub, Harry is voiced by Tōru Ōkawa, replacing the late Nachi Nozawa in the same role. On the other hand, Kōichi Yamadera reprise his role as Lloyd.
  • An inverted case of the above happened in the first Mexican Spanish dub, where it was Lloyd whose voice actor got replaced, in this case he is voiced by Mario Castañeda, Jim Carrey's regular dub voice actor in Mexico, while in the first movie, he was voiced by Salvador Delgado. On the other hand, Martin Soto reprised his role as Harry.
• Role Reprise: 20 years after the first movie, both Jim Carrey and Jeff Daniels are back as Lloyd and Harry respectively. There's also Brady Bluhm returning as Billy in 4C, as well as Cam Neely returning as Sea Bass.
• Saved from Development Hell: It only took 20 years...
• Sequel Gap: The film was released 20 years after the first movie. And as a bonus, the movie takes place 20 years after the events of the first movie.
• Star-Derailing Role: For Jim Carrey. While Jeff Daniels didn't see his career slip from this film's negative reception – thanks to supporting roles in Steve Jobs and The Martian, along with TV work for which he either won an Emmy (like The Newsroom) or got nominated for one (like Godless), Carrey faded from the limelight. He laid low for a few years before rebounding with his role as Dr. Robotnik in Sonic the Hedgehog (2020).
• What Could Have Been: During the film's production, Jennifer Lawrence was in talks to have a cameo as a younger Freida Felcher, but ultimately it didn't end up happening.

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