That makes a good interview question, one I've both asked and been asked. The only acceptable answer is: 'Well, we go down to the local bar/pub and hash it out over a beer.'
The idea is not to be the only person with the "right" answers. The beer part is more for comic relief, but it shows that one is willing to sit down with someone in a casual setting and iron out any differences. Hard to be mad at someone you're breaking bread / having a drink with.
Edit: well, maybe not the "only" acceptable answer... ;)