Severus sat down for lunch, scowl on his face as Dolores took the Headmaster's seat for her own. "Oh, Severus, silly me, this is your seat isn't it? I guess it's just habit to go back to the last seat you had here, isn't that right?" Severus knew to not take Umbridge's bait as he had expected her to. The biggest chair also has the biggest blind spots.