What is the most commonly used phrase in English that came from a movie?

As a child in the UK in the 60s I was familiar with ‘shut your cake hole’, but not ‘pie hole’.

I’m not familiar with that term but perhaps Butterfly Effect?

No, the two are completely different.

The Butterfly Effect was illustrated in the episode of The Simpsons where Homer goes back in time and kills a dinosaur, thereby altering the future.

The Sliding Doors Effect was illustrated in the movie Sliding Doors, where making and missing a subway train produced two alternative futures.

In Ghostbusters,

Would “red pill” qualify?

I would think so. As would ‘a glitch in the Matrix’.

I wonder, did the crack about bringing a knife to a gunfight (and all its variations) originate with The Untouchables?

I have heard more about the blue pill:

That was the first time I ever heard it.

How about “I have a bad feeling about this”?

Houston, we have a problem.

Show me the money!

I still think “The Usual Suspects” must be a strong contender. So far as I know, that phrase had never been used prior to Casablanca, and it’s definitely used regularly, even by people who’ve never seen the movie.

It even made it into German as “die üblichen Verdächtigen”, which is rare because Casablanca, as most foreign movies, was dubbed, and often classic movie lines lose their impact in translation.

The problem is that is a pretty basic phrase used by people a lot before Star Wars. And then in the series they use multiple variations on the phrase so it’s rarely an exact quote.

Okay. But while I have heard people use “butterfly effect” as a phrase (though it wasn’t created by that movie and so doesn’t qualify) I have never in my life heard anyone use “Sliding doors effect” or some such phrase.

Hell, it became its own movie!

I’m not sure where you’re from but I’m in the UK so maybe it’s more of a British thing, since Sliding Doors was British, or at least set in the UK. I’m not saying it’s massively in use but a phrase I have definitely heard on many occasions over the years when talking about something similar to the also mentioned Butterfly Effect.

Would you say it comes up more often or less often than referring to, say, ‘a Groundhog Day situation’?

Terms like “Sliding Doors” and “Groundhog’s Day” are mostly just used to describe situations in other works of fiction.

Didn’t you ask me that yesterday?

Ned?!?