[On principle, he doesn't like the idea of dragging a guy's wife into said guy's business--it's just not the way things are done and not fair to her. But this isn't business business, and he figures that a question will be harmless. At least to her. She's handed him a pretty good segue, too.

With exaggerated casualness, he continues:]

There aren't any lakes where I'm from. ...But I've been stuck underwater in the ocean. Ask Hank, he knows all about it.