Pretty much everyone has something that's unique or different about them. What's your quirk?
I randomly say "dog, dog, dog" once in a while (only at home, not at work). I've been doing it for years and I'm not sure why. My nephew lived with me for a few months and he started saying it too after a while.
Yesterday, we had a council of the blind meeting and before it started we were having sandwiches from Jersey Mike's. Suddenly without thinking, I said it. Fortunately for me, there were people with service dogs there so nobody asked why I said it. They probably thought I was talking to someone's dog.