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knock yourself out

INFORMAL
This page is about the conversational phrase knock yourself out

Meaning

You can say this to give someone permission to have or do as much as they like.

For example

  • "Can I get myself something to eat?"
    "Knock yourself out! There's plenty of stuff in the kitchen."

  • "OK if we use your computer?"
    "No problem. Knock yourselves out."

Note:
Also "go for it" (also informal)

Quick Quiz

If someone says "Knock yourself out!", you can

a. punch yourself

b. ask for permission

c. have as much as you like

Contributor: Matt Errey