Mad Mafia
A person who is so furious they act like a gang of criminals. This can be caused by an ex showing up with a new guy, or because they drank too much and took too many steroids.
I saw my ex with her new guy, and I yelled at them both like they were my enemies.
I took steroids, drank all my beer, and then I screamed at my ex like she was the devil.
I saw my ex at the mall with her new guy, and I chased them down like they were running from the police.