I have named changed for this, because admittedly it is rather embarrassing!
I'm wondering how odd it is to talk to yourself and act out fake scenarios. I think I've done this since I was a child, but sometimes I will be by myself, be thinking of something indepthly, then all of a sudden I'll have created a scenario and be acting it out to myself. For example, a moment ago I was being interviewed on television about quite a niche topic, with the interviewee being very impressed with my answers.
I will then realise what I am doing, feel a bit embarrassed even though I am alone, and stop.
These scenarios aren't really things that have happened, just fantasy thinking I guess! Obviously I've never admitted this to anyone in my real life before, so am I being unreasonable to ask if this is odd behaviour, and wonder if anyone else does this?