"Yeah," McCoy agrees, though he refuses to meet Spock's gaze, refuses to act like a crap liar when he knows that he just needs to not kill his own damn father. "Yeah, I figured out a couple of new skills." He shifts uncomfortably, trying to keep away from the hall, avoiding his sleeping father and feeling like he's stuck between a rock and a hard place. "I just need the two of you out of this room come around this evening. That's all."