1. A habit or preference generally shared by people from northern California (Norcal).
Carl: Ey why is that nigga, Jake, always saying "hella?"
Edd: Dude, he's from norcal.
Carl: They all say that shit?
Edd: yeah, dawg, it's a norcality.
Ben thought his friends were avoiding him because of his norcalities but in truth he was being a total asshole.