do a favor
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do (one) a favor
1. To help someone else, typically at their request. Sometimes used sarcastically. Hey, do me a favor and take these bags into the kitchen while I get the others from the car.
2. A request for someone to stop doing something bothersome or annoying. Can you please do me a favor and take your loud music somewhere else? I'm trying to sleep! Look, I know you want to help, but do us a favor and just stay out of our way.
3. A response to a statement that the speaker finds ridiculous or stupid. ("Favor" is usually spelled "favour" in British and Australian English.) Primarily heard in UK, Australia. A: "Katie seems nice." B: "Oh, do me a favour—she's one of the cattiest girls in school!"
do (oneself) a favor
To do something that helps or betters oneself. Do yourself a favor and go to college—now that I'm older, I regret not having that experience. Because I knew that I had to get up at 4 AM today, I did myself a favor and went to bed early last night.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
do someone a favorand do someone a good turn
to perform a helpful service to someone. Would you please do me a favor and take this letter to the post office? My neighbor did me a good turn by lending me his car.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.