Big fucking ROACHES that just let themselves into your house like it ain't nobody's business to scare the shit out of you when you least need it, and refuse to leave after you tell them to get the hell out of your overpriced apartment, especially in Charleston, South Carolina. Pretty much a cross between an ASSHOLE and a COCKROACH!
See also "Palmetto Bug"
While, at 5AM, Betty and Bob study for their 5 final exams for the morning:
Bob: HOLY SHIT! Was that a cat that just crawled accross your ceiling or was that the biggest cockroach I've ever seen?
Betty: Oh... that's just another assroach.