Short for The business.
v. something that you give to someone else. Extreme rape, to give someone the biz is to completely poop on them.
Ex1. "Give these kids the biz"
Ex2. "You just got the biz son"
someone who is unknown, and they want to be notoriously well known.
ex1. Kid no one knows who are you are your such a randumb.
ex2. These guys are a bunch of randumbs