What does 'Knock 'em dead' mean?

'Knock 'em dead' is used as a way of wishing someone luck before they give a performance or have to appear before people, as in an interview, etc. ('em = them)

Idioms similar to 'Knock 'em dead'


All idioms have been editorially reviewed, and submitted idioms may have been edited for correctness and completeness.

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