For the most part, there aren't too many striking differences between the way people talk in Chicago and the way they talk in Michigan. One saying I don't remember hearing anywhere else but here is "Jeez-O-Pete's".
For example, someone might say "Boy, I really nailed a 6-pointer with my car on the way home from bowling last night." The reply would be something like, "Jeez-O-Pete's! Is it totalled?"
Do people by you use this expression?