Here's a transcript:

Audience member:
This question goes to mental health and mental health care. Previously, I've
been married to a woman that was verbally abusive to me. Is it true that you
called your wife a (expletive)?

McCain:
Now, now. You don't want to... Um, you know that's the great thing about
town hall meetings, sir, but we really don't, there's people here who don't
respect that kind of language. So I'll move on to the next questioner in the
back.

Crowd applauds.