knock 'em deadINFORMAL
This page is about the conversational phrase knock 'em dead
You can say this to give encouragement to someone who's about to perform in public, play sport, go for a job interview, etc.
- Just before Laura went on stage, her manager hugged her and said,"Knock 'em dead!"
- My brother was looking really nervous before his race, so I shouted, "Knock 'em dead, Alex!"
Contributor: Matt Errey