be (a) one for (something)

To be someone who likes or excels at doing something. I'll never be one for public speaking, that's for sure—my palms are sweating just thinking about it! My mom's a one to throw a fancy dinner party, but that gene skipped me for sure. I hate talking on the phone, so I'm not one for returning phone calls.

be (a) one for something/for doing something

(informal) be a person who enjoys something, or does something often or well: She’s not one for staying up late — she likes to be in bed by eleven. ♢ They live in the country and they’re great ones for long walks.