[Don't you tell him what he does and doesn't know about his own kind, you self-important brat. Ugh, must he list everything? He'll sound like some whiny weakling. "It sort of vaguely hurts all over my body and it feels really strange" when normally he's shot and stabbed on the semi-regular and none the worse for it? Sebastian spends a few moments in sullen silence, weighting the chances that he'll get away with a dismissive "nothing of note".
Ciel really doesn't look to be in the mood for evasion attempts. And what right does a servant have to keep bothering his master so, when he's already failed at his duties so monumentally in just the past hour? Sebastian sighs, before giving in. Attempted dispassionate voice (there's still a hint of frustration there), as if he's relaying a list of groceries:]
Evidently I lack a sense of balance. My head feels... [what's the word? he gestures vaguely with a hand at his temple] heavy. My kind do not grow weary save at extremely great exertion, and yet as the young masted noted, [annoyed sigh] I currently have no strength.
[Is that enough?]
There is... absolutely no reason for me to feel so queer. I am uninjured. [/marginally helpful?]