Wop is a English pejorative ethnic slur for a person of Italian escent. It is derived from the Neapolitan word "guappo", meaning a person who flaunts an overbearingly cocky and swaggering attitude. The word defines those who belong to the "Guapperia" o "Camorra", a criminal organization similar to the Sicilian Mafia located mostly in Campania (an Italian Region) and its capital Naples.