Essery sunk back against the arm of the sofa and took another few bites of ice cream, then shrugged and leaned to sit her bowl back down on the coffee table. She could mince around it, tease and get him to really guess, but then that would build it up, and she didn't want him to literally explode from the shock when she told him.
"Well, it's um... Severus. Actually. Headmaster Snape..." She bit at her lip anxiously, waiting for his reaction.