[Doc just...stares at him] Yeah, I think you might have a different definition of "friend." Or, um, "nice." That's probably different, too. [he pauses awkwardly, trying to figure out how to handle this situation] Uh. So, I mean, Wash is my friend now? But he wasn't exactly when he was threatening me and kidnapping me and killing people for no reason. [more brightly, he adds:] But differing opinions on friendship is one of the things that makes us human!

So. [a beat] You must've had a really good surgeon!