what's it to you
Definition from Wiktionary, the free dictionary
- (defensively) Why are you asking? Why do you want to know?.
- "I saw you in the chemist yesterday, what did you buy?" / "What's it to you?"
- Mind your own business; it's none of your business.
- "Hey, leave that girl alone." / "'What's it to you'?"
(defensively) why are you asking?