History YMMV / TheParentTrap1961

* NeverLiveItDown: A lot of fans forget that the twins' plan isn't initially to get their parents back together. They just want to get to know the respective parent they've never lived with. The plan also doesn't come into action until after the twins have a discussion about how neither of their parents ever came close to getting married again. So the twins are aware from the start that there's a possibility they wouldn't get back together.

* {{Squick}}: When Sharon and Susan are looking through the latter's scrapbook, they come to a portrait of an older man and Sharon asks who it is. Susan's response? "That's my dad. Isn't he dreamy?" Yeah, that's [[SarcasmMode not disturbing at all]]!

* DesignatedHero: The parents. They were people who got divorced and, to make it easier on ''themselves'', decided that each would only get custody of one child and never mention the existence of their sibling.

* TheCastShowoff: Hayley Mills, like Creator/AnnetteFunicello before her, parlayed the film's success into a brief but moderately successful singing career. "Let's Get Together" was a Top 10 hit and "Johnny Jingo" just missed the Top 20, but neither Hayley's album nor any of her other singles sold. However, "Let's Get Together" became a belated #1 hit in Mexico in 1963.

* TheCastShowoff: Hayley Mills had a very brief career as a pop singer following the success of "Let's Get Together," which became a Top 10 hit on the ''Billboard'' charts in the fall of 1961 (and would later belatedly hit #1 in Mexico). It ended within a year after one more moderate hit ("Johnny Jingo") and two more singles and an album which were unsuccessful.

* TheCastShowoff: The success of "Let's Get Together," which became a Top 10 hit in the U.S. and a Top 20 hit in the UK in the fall of 1961, propelled Hayley Mills into a very short-lived recording career, which ended within a year after one more moderate hit ("Johnny Jingo"), an unsuccessful album and two more unsuccessful singles.

* TheCastShowoff: "Let's Get Together" became a Top 10 hit record in the fall of 1961, inaugurating a brief stint as a singer for Hayley Mills, which resulted in one album and only one other hit record, "Johnny Jingo."

* SpecialEffectsFailure: When Susan and Maggie are walking after their picnic, it's extremely obvious that they're walking in place in front of a green screen.

* AdaptationDisplacement: Most viewers aren’t aware this film was based on a novel, ''Literature/LottieAndLisa''.

* Main/Squick: When Sharon and Susan are looking through the latter's scrapbook, they come to a portrait of an older man and Sharon asks who it is. Susan's response? "That's my dad. Isn't he dreamy?" Yeah, that's [[SarcasmMode not disturbing at all]]!

* Squick: When Sharon and Susan are looking through the latter's scrapbook, they come to a portrait of an older man and Sharon asks who it is. Susan's response? "That's my dad. Isn't he dreamy?" Yeah, that's [[SarcasmMode not disturbing at all]]!

* Squick: When Sharon and Susan are looking through the latter's scrapbook, they come to a portrait of an older man and Sharon asks who it is. Susan's response? "That's my dad. Isn't he dreamy?" Yeah, not exactly the best of choice of adjectives there, Susan!

* Squick: When Sharon and Susan are looking through the latter's scrapbook, they come to a portrait of an older man and Sharon asks who it is. Susan's response? "That's my dad. Isn't he dreamy?" Yeah, not exactly the best of choice of adjectives, Susan!

* Squick: When Sharon and Susan are looking through the latter's scrapbook, they come to a portrait of an older man and Sharon asks who it is. Susan's response? "That's my dad. Isn't he dreamy?" Yeah, that's [[SarcasmMode not disturbing at all]]!

* FamilyUnfriendlyAesop: If children actually tried to bring their divorced parents back together, chances are the consequences would be disappointing and devastating. But then again, there are a few real life examples on the DivorceIsTemporary page...

** The Hayley Mills version had three sequels, the last one coming just nine years before the Lindsay Lohan version. Anyone remember them? The third and fourth got hit especially hard; ''The Parent Trap II'' at least became bundled with the original on DVD. It's worth noting that the sequels were all made for the then-new Disney Channel as made-for-cable movies. Today, they're relics of when the Disney Channel was intended more to cash in on classic Disney nostalgia; it was only over time that it morphed into a source of original kid-friendly content.

** The Hayley Mills version had three sequels, the last one coming just nine years before the Lindsay Lohan version. Anyone remember them? The third and fourth got hit especially hard; ''The Parent Trap II'' at least became bundled with the original on DVD.
*** It's worth noting that the sequels were all made for the then-new Disney Channel as made-for-cable movies. In fact, IIRC, ''Parent Trap II'' might have been the channel's first original production. Back in the day, the Disney Channel was intended more to cash in on classic Disney nostalgia. It was only over time that it morphed into a source of original kid-friendly content.

* ValuesDissonance: The idea that parents who broke up in a divorce should get back together, no matter how much they fight, is odd to 21st century society ([[ComedyOfRemarriage but quite familiar to mid-20th century American one]]). The relationship between the parents in the Hayley Mills version seems a little abusive by modern standards.
* SugarWiki/VisualEffectsOfAwesome: You can thank the DoubleVision effects (as well as some good acting) for convincing several movie viewers that Hayley Mills had a twin sister.

* EarWorm: "The Parent Trap" and "Let's Get Together," two of the first songs that Music/TheShermanBrothers wrote for a Disney movie.