Yeah, not my experience at all growing up in Winston, phdeac. My experience is much closer to strick's.
Growing up in the middle class, in ardmore, attending public schools, I knew lots of annoying Carolina fans, but they for the most part were from the state of North Carolina or their family went to school there.
I don't remember knowing a single duke alumnus growing up, but my school was peppered with awful duke fans (including manifestdestiny, who split his fandom with wake), none of whom knew anybody that went there, or cared about football.
Carolina, as an institution, attracts all kinds of students and fans, some annoying, some despicable, and some who don't care at all about sports.
duke attracts only one kind of student and fan -- slytherins