What’d you say?
Talking to yourself is the verbal equivalent of scratch paper. It’s sketching in the air, especially if you gesture. It’s thumbing through your mental dictionary (or thesaurus). It’s a way to feel your way through your thoughts and think through your feelings a little more deliberately. It is at once a telescope and a microscope trained on your inner landscape.
Talking to yourself out loud is also a check on the voice you use to talk to yourself silently.