I usually use "ours" when talking to people. But when I'm talking to DH about how I want something (food) or am in pain, I say "your". I mean it as a funny jab.
I use "ours" most of the time- I don't think I've ever used "mine". But, the other night when DD was kicking the crap out of me and keeping me awake I told DH "YOUR daughter is keeping me up!" hehehe
Re: Mine/Ours - clicky