American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Knock yourself out


Encouraged to continue doing something one enjoys. Go ahead and do what you are enjoying doing. This phrase suggests that the person commenting would never want to do what the other person is doing. (Compare to Go for it.)

“The stranger came by and asked if he could chop my pile of wood for the fireplace for $20 and I told him to go ahead and knock himself out.”

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