Wow, I can't believe all of this technical advice, as if you are going to learn the subtleties of how to throw some kicks in a couple of days. I'd disregard all of that shit dude. And DON'T be afraid if this dude gets a hold of you. Last thing you need running through your mind at that moment is, "Oh shit, what now?". Being an athlete gives you a big advantage and if you are good on your feet, then work some angles, it's all about angles. You average fat American dude is not going to be nice on his feet so if you can dip side to side with some quickness then that's a plus. I wouldn't try to game plan too much because in a fight, you just don't know what's going to happen. Fat boy might be nice with his hands and put you on your ass quickly....you got a plan for that? Anyway, good luck bro and make sure that there is no lingering beef afterwards no matter who wins. Actually, are you sure this dude can handle having his ass beat by someone who weights 100lbs. less than him? I'm sure you are familiar with what happens when dudes can't handle having their asses kicked, you'll be up on here asking how to handle 3 or 4 guys at a time next.
I LOVE paying for Xbox Live! I also love that my love for it pisses off so many people.