It happens more and more as I get older. I don't know whether it is increasing age or living alone that brings it on, or a combination of both, but I do it all the time at home. It's nice to have the sound of a voice, and sometimes I need to encourage, or possibly discourage myself in what I am doing, or even ask myself what the hell it is I think I am doing!
On the whole I try not to do it when out and about, but the habit is so ingrained by now that it just breaks out from time to time. This evening, as I took my constitutional round the block, I noticed ahead of me a young couple standing beside a shiny black open-top sportscar. Next moment I noticed a tiny blond girl-child sitting behind the wheel."Oh!" I say, as my thoughts push my mouth open "there's a small per......." - but at the first sound of my voice the young man's head has come up and he is looking at me enquiringly.
"Sorry" I say "I was talking to myself. I was going to say 'there is a small person driving a big car'", and I smile in what I hope is a disarming manner. "Hmm - trying to" comes the response from the young man, who has fortunately not taken my remarks amiss.
So all in all quite a pleasant exchange, but supposing I had been passing disagreeable comment on someone? It could have turned nasty! I really must watch myself.
I found this illustration on a fascinating website called verbotomy.com - you really should visit it, especially if you are a lover of words. With great difficulty and some guessing web searches, I managed to decipher the name under the cat's paw, so that I could give them a plug. So I hope they don't mind my using the picture.