Caboriginal refers to the people found in Caboolture.
Most of which are aboriginal. They roam the streets at night being loud and obnoxious, sniffing metholated spirits and sniffing paint and whatever else they can get their hands on. they make you think you're going to get mugged. because you probably are.
person 1: oh shit son, its a caboriginal.
person 2: we're in Caboolture, that would explain a lot
caboriginal: YO NIGZZ U GON GET RAPED!1!!!