I talk to myself all the time, especially when hiking or out for a walk. This can get embarrassing when you run into another person around a turn. If you are with your friend and talking, well you're just talking to your friend. When it's just you .. that must be a crazy person (unless you've got a flashing bluetooth headset or a phone in your hand I guess). I usually get real silent and then slowly pick back up as I…
I also talk things out while driving alone. I used to get embarrassed that other drivers could see me. But now a days hands free phone systems are commonplace in cars so I just talk away :)