Dean laughed at that, and shrugged. She was an epic bitch but, when she was in the right mood, she could sometimes be kind of funny. He was just pretty sure she would turn on them soon, without even needing a real reason for it. He didn't have any illusions about their teamwork.
Taking the knife from her, he wiped the blood off as best he could onto his shirt, and then there were growls and Dean's heart hit his throat when Meg shouted for them to run. He didn't need to be told twice, he was already running within a second, boots thundering on the concrete floor.
"Son of a bitch, we need to kill 'em or we're not getting outta here."