Yes, all the time actually, I tend to make some good points, anyway, seriously I do my guess is that because I have nobody to talk to I just speak to myself, sadly most people just think I'm crazy, and well there was that time that I spent 2 hours talking to a tray filled with bacon, I don't remember why I did it or why what we were talking about but the people who were there still bring it up every time I see them.
But anyway, yes I often do and in public, I couldn't care less what people think of me, but when I'm thinking about something I have to bounce ideas, so I normally assume 2 different stances on a topic and walk around arguing stances with myself, at least enough people have seen me that if I were to commit a crime I'd have enough witnesses that would say I'm insane, so that's a plus, though to be fair everybody has always said I'm crazy, I don't know why I seem pretty sane to me but I guess people like to exaggerate stuff.