When your ex girlfriend wont leave you alone, she is the Mafia. Once you break up with a girl, you refer to her as the Mafia, change her name in your phone, etc...

The Mafia, was referred to in Italian as Cosa Nostra "Our Thing" or "This Thing of Ours", is a secret society that evolved from Italian Organized Crime in mid-19th century Sicily. An offshoot emerged on the East Coast of the United States during the late 19th century following waves of Italian immigration to that country.

The Mafia's power in the United States peaked in the mid-20th century, until a series of FBI investigations in the 1970s and 1980s somewhat curtailed the Mafia's influence. Despite the decline, the Mafia and its reputation have become entrenched in American popular culture, portrayed in movies, TV shows, and even product commercials
"Mafia" is today often used by extension to refer to any large group of people engaged in criminal racketeering activities, such as the Russian Mafia, Black Mafia, Mexican Mafia, Japanese Yakuza, Irish Mob, Chinese Triads, Albanian mafia, Cuban Mafia, Indian mafia, Cormafia, and several other ethnic organized crime groups.

A bunch of vacuous, self-important, anti-social cunts who, because of their refusal (read: inability) to interact with anyone in their own year group, have broken away and formed a tragically un-hip and un-happening little clique. Very reclusive and potentially dangerous. Their homophobic, racist and quasi-fascist adherences are particularly offensive (or hilarious, depending on how you look at it).

hard thugs you cant mess with.
the mafia 3 and we aint bout that bullsh!t.
the softboys are afraid of us