On my own, I use my own name and pronouns. Not ever said or thought something like "Toutouxc, what are you doing?"

Nope, literally never. The idea of talking to myself using my own name is even a bit unpleasant, actually. I don’t have a bad name, I just don’t use it in my relationship with myself. Just like I know and like the name of my girlfriend, but I seldom address her by the name, we usually use the honey/love/baby equivalents.