[Either he's insisting on being a jerkass or else he must have hit his head]

That is the name that you told me I should be known as to the people. As uncouth as it would be to suggest that you've lost certain faculties over the long years, I can think of no other reason for you to forget so easily.

[She planted one hand on her hip as she gave him her best annoyed, displeased stare. He was probably enjoying it, but perhaps obliquely suggesting he'd lost his edge might get her point across.]

And no doubt those are the men's dormitories.

[Going in a different direction partly just to spite him but also because that's the sort of thing Merlin would do for entertainment]