do (someone) a favor

phrase

variants or do a favor for (someone)

: to do a kind and helpful act for (someone)

You can do your uncle a favor by giving him a ride.

Do me a favor, please, and help me move this.

—the phrase Do me a favor is sometimes used in an ironic way when a person wants someone to do something that he or she should do anyway

Do me a favor and get home on time for once.