You politely decline and step out of line. The rat stares at you with a cold fury.
"One does not reject the True Rat King."
You swear you hear more than one voice speak in unison. The bar has gone silent.
"One does not reject the True Rat King!"
Now you're certain you're hearing multiple voices. The rat attempts to grab for you. You scamper out of the bar, dodging as other rodents attempt to grab you. You escape out into the eternal night of the sewers.