“It is said that an Eastern monarch once asked his advisors to invent a sentence that would be true in all times and situations. They presented him with the phrase, “This too shall pass.”

It seems apparent, also, that at some point in the distant past a screenwriter presented a somewhat similar request to his muse. The response was, “Let’s get out of here.”

Roger Ebert has said, “(It is) the most common line of dialog, due to its versatility and applicability to any situation from ‘We’re under attack!’ to ‘I’m in love with you.’”

It’s one of those throwaway lines that you have probably heard many times and in many different films and just not noticed its ubiquitous nature” *

* source

Also, take the look at the definition at urbandictionary.com.

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