Someone asked what my cards were

[Yobz]

I was playing 5/10 at Turning Stone (somewhat high limit since they only spread 10/20 and 20/40 higher than 5/10 at the time and most tables were 1-3 spread). Anyway, I was chatting up a storm, getting everyone relaxed and trying to get them to stop concentrating on cards so much. One of the quiet older males who I haven't really talked to asked me what I had after I took down a huge pot on the river without showing. Giving away my hand would be dumb...how do I pretend to be nice while saying "f off" at the same time?

Editted for spelling reasons.