I don't own a single weapon. Unless you consider various pieces of sporting apparel weapons; cricket/baseball bat, tennis raquet, squash raquet etc.

I've never had any training in martial arts, or any fighting for that matter, save for a few pointers from friends, but as I've never really had to exercise self defense, I still think I'd hold my ground pretty well in a fight.
It's always different in the real thing though. :rolleyes2