I'm gonna assume "muties" are mutants, and just...politely point out that we have some people here who are mutants. And that "muties" back home for us is pretty much a slur.

[He's trying to be diplomatic about it. Different worlds, and what matters most is how she reacts to him saying this.]

So I'm going to just have to ask you to maybe use 'mutants.' And as long as you're okay with that, we'll just...keep on with this conversation, because I'm curious about your world. But I'd be a bad friend if I didn't point that out.