As far as sex goes, though I'm up for experimenting, I'm neither, as I've never done anything like that before.
As far as anything else goes, I'm a sadist. I write short stories sometimes, and I have a tendency for my characters to be quite sadistic with regards to handling situations and other people (I even made a thread a while ago asking what the worst forms of torture people could think of were, for one of my characters to use - bear in mind she happens to be one of the good guys...). Plus I have a weird fascination for blood and gore and for anything involving torturing someone, though I wouldn't do anything like that myself...