This comment brought back bad memories for me, having lived in North Carolina for almost 30 years now and despising the Tar Holes of UNC.
They hadn't had a particularly great year and most thought they were firmly on the wrong side of the bubble (might have been one of the years when Matt Doherty was coaching). I was at the ACC tournament and they lost their first game so there was no way they would get in The Dance. I was outside the arena waiting to go in for the next session of games and as the dejected Tar Hole fans left the building all the fans of every other team standing outside were chanting "NIT, NIT, NIT." It was glorious - more fun than actually watching the games that were later that day.
Of course, the crooked NCAA couldn't leave their darling Tar Holes out of the tournament, so they were one of the last in with a fairly low seed. The bastards then proceeded to make a run in the tournament at least to the Elite 8 and maybe the Final Four, can't remember for sure. It was like a kick to the crotch.
To understand the hatred of non-UNC fans toward the massive UNC b-ball fan base, it needs to be clarified that the UNC b-ball fan base is one of the most insufferable fan bases around, but they aren't really mean-spirited or nasty about it, they just know they're team is generally better and you really can't argue with them about it. It would be better if most of them were jerks about it, much like the Duke b-ball fan base is (they truly are a bunch of jackwagons).