Runs the trap

Originally meant as the person who is in charge in a place where illicit drugs are sold. AKA a traphouse.

Also can mean, someone who is a bosslike figure or calls the shots somewhere or in some function, or is just a badass.

"Have you watched the new Game of Thrones episode?"
"Yeah, Barristan Selmy runs the trap."
"They thought he was sleeping' but he runnin' the trap."