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Chloe: Lois, you're beyond late. There's something you need to know.
Lois: He is the only one who could help me
escape from the jaws of crouching tigers. Help her stay sane?

I'm sorry, whatever it is, it's gonna have to wait.
Comments  
No indication; it is not an idiom.
Hey, Madhulk. Are we on season eight of Smallville here?
Madhulkescape from the jaws of crouching tigers. Help her stay sane?
There must be some missing context because the dialog means nothing to me as quoted.
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Just an added thought: isn't 'crouching tiger' some sort of martial art / kung fu term? Or is it just part of the movie title?
In the previous scene she fought againt a ninja woman. Is that it?

But then why she uses the plural?
Either several of the same maneuvers or a future ninja attack.
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Right. Thanks, RayH and Mister Micawber!