Vincent was losing his paitence with you. You were rowdy in your jail cell again. He just wants a peaceful shift.

"Would you quiet down." He orders, only turning his head. He turns back, standing straight, looking around.

It was his turn for the night shift in prison. He's the prison gaurd. And you were making him a ticking time bomb with all your ruckus. Not to mention the flirty comments from you.