Nobody? Maybe you guys are just self-conscious about babbling into your phones...? This is also a great exercise for being less inhibited.
When we were growing up, my sisters and I used to hold long "conversations" that meant absolutely nothing. All we were doing was uttering whatever sounds came into our heads. But we did it so often, we got very good at it—to the casual listener it probably sounded like a foreign language.
When you get right down to it, none of us has the slightest clue why we think, say or do anything. Thoughts and feelings float up from our unconscious minds, and whether or not we act on them is dictated by our needs and values. And we certainly don't create those—it'd be like picking yourself up off the ground.
If you just let yourself talk without trying to do it or thinking about it, you'll find you can make long speeches on any topic at all. You can look at a tree, for example, and keep 100% of your attention on the tree, then just let yourself start talking about it, and you can say all kinds of things about it without any planning or control.
That's how we always talk about stuff. We're just used to the illusion that we "control" it. It's actually much harder thinking about every word you say; it just adds an extra layer of complexity.
I caught on to this when I learned to play jazz. In jazz, you learn your instrument well enough, technically, that you can play whatever comes into your mind. Then you practice just letting yourself play, thinking only about the tune in general, so your musical ideas can come right from your unconscious mind with minimum interference, like walking or riding a bike. When you do that for a while, you eventually realize everything's like that—and that if you get out of your own way and trying to "control" everything, you go on being exactly who you are; it's just a lot easier.