(that's) news to (one)
This is something I was not aware about or did not know. A: "Yeah, Jeff and Anthony have been going out for a few months now." B: "News to me. I thought they were just friends." We're not allowed to dump grass clippings here? That's news to me!
be news to (one)
To be something that one was not aware of or did not know. A: "Yeah, Jeff and Anthony have been going out for a few months now." B: "Well, that's news to me. I thought they were just friends." You aren't allowed to dump your grass clippings here? Well, that's news to me!
That's news to me.
I did not know that.; I had not been informed of that. Bill: They've blocked off Maple Street for some repairs. Tom: That's news to me. Sally: The telephones are out. None of them work. Bill: That's news to me.
it’s/that’s ˌnews to ˈme
used to express surprise at some information that you have just heard: ‘Max is thinking of leaving his job.’ ‘Really? That’s news to me. I thought he was happy there.’