Anyone else stutter-free only when they are by themselves/talk to themselves?

Anyone else stutter-free only when they are by themselves/talk to themselves? Just wondering if this is common among all of us. I've stuttered ever since, and I find it weird I don't stutter at all when I'm by myself/talking to myself. Edit: Thanks for the replies everyone. Stuttering...sure is a weird thing. I always wonder if I should try a hypnotist, haha