I would probably be much better then I am at fighting if I had much experience to draw upon. I was only in one fight where I seriously feared for my safety, and at that point, adrenaline tossed all sense out the window. With experience, I'm confident I'd be able to overcome that. Haven't had the chance though.
With an object, I think I'd be a bit better. I know how to use a knife or a sword, particularly a rapier, much more then my fists.
I can only remember one other fight, when this one girl slapped me because she didn't like what I was saying, but I did not strike back. She didn't deserve my attention. As it was, she sniffed and I left. I guess I wasn't weak enough to be bullied?
Anyway, back on topic. I can defend myself adequately if my head stays clear, otherwise, I'll probably lunge at you like a deranged animal and try to remove your eyeballs. Seriously. Strangle, maybe?