Mangüerear
To act like a big-shot narco or a dangerous thug when you are actually just a low-level lackey or servant. It refers to the act of showing off with flashy cars and money to look powerful, usually to impress others. (In Mexico, this is often associated with the buchon subculture where people imitate the gaudy, high-spending lifestyle of cartel members).
That guy is a damn manguera. Those dudes really love to mangüerear.
Automatically translated from Spanish