Indeed i do. My mom just thinks it's "not right", when actually, it's been proven to help in many areas, such as language. But i tend to stop myself when i know she's coming around my bedroom door..-_-
I always talk to myself as if my favorite characters are listening to me or if I'm practicing my variety at accents and voice pitch. (Gotta be prepared for voice work in the future y'know. : P) When my mom notices me doing that or laughing to myself, she'll say that if I do that at school I'll be thought of as crazy.
I walk around the house talking to myself as if someone is listening to me and is answering. I also talk as my OCs out loud ._. it gets kinda awkward if I accidentally do it in public.... ...I need more friends T-T
I know, I do it to! When I do so in public I get weird looks and people call me crazy... I just moved to a dofferent state 4 months ago, and my liking of anime and the fact that I talk to myself made it so I don't have many friends... But its okay to talk to yourself! X3