Ambidextrous, but I learned to write with my right hand, so that's the one I write with.
I still can't write for shit with my left.
Actually, I do most things exactly like a right-handed person would, since that's how I was raised.
Things I weren't taught to do a particular way, though, I tend to mix up a bit.
I pour things into glasses with either hand, I can stir my coffee with my left, and so on.
Everyone thought I was right-handed up until I was 10-ish.
I joined a local hockey team, and I picked out a leftie-stick.
And then everyone got confused when I picked a righty-stick another time.
It felt pretty much the same to me.
I eventually went with right-handed stuff, since I later became a goalie and we didn't have any leftie goalie gear in my size.