I talk to my fish, lol. And my chickens and dogs and cats. The dogs and cats and chickens all understand some words. Most people dont think chickens are that smart, but they sure perk up when you say "grasshopper." I think out loud too, occasionally I find myself muttering to myself while taking tests. That sure makes the teacher glare at you, when you are saying all the answers, lol. I dont mean to I just do sometimes.
My world history teacher talked to himself all the time. I would go in there to ask him some questions and he would be grading test and would randomly say some words. It would always confuse me, lol. It was hard to tell when he was answering my questions or just talking to himself. He is an amazingly smart person, but a little strange at times. Oh, and really scary, he's the throwing coach and despite being in his mid-fifties could probably take down several of the sr. classes strongest guys at once, lol. All the other teachers were amazed by how he controlled the class without ever raising his voice. He didnt take any crap and everyone was afraid to talk back to him.