I can talk about anything at all, and I probably have an opinion on everything too, whether that be good or bad :P And after having done medical science, I can talk about things that would make most people queasy. It's pretty funny, talking with your friends in public about things like that and not realising that its making other people uncomfortable, oh well.
I'm pretty laid back, and I don't mind listening to peoples rants or gripes or what have you. People have said they like talking to me because I'm non-judgemental, or maybe I'm just apathetic :P I like to just hang out with friends and talk. I love to talk about the deeper things too, the things that are meant to be left out of polite conversation. Fuck polite conversation then :P