Also known as Obsessive Compulsive Bitch. Similar to one diagnosed with OCD (Obsessive Compulsive Disorder), an OCB does not have a diagnosis. She is someone who must have it her way, even to the detriment to everyone around her.
Mike: She told us to walk in the blazing hot sun at high noon, because the side-walk with the shade was too narrow!
Alicia: She def has the OCB.