I see you gained all the malicious sense of humor.
[Aidou is very annoyed--and flustered. He is this close to a full out tantrum.]
And pray tell what could possibly be funny about the insinuation you've made that I could ever like your brother, who I happen to loathe?
[Okay so maybe loathe is a strong word, because Aidou doesn't really see the point in hating people like that, but he can't stand Zero and his attitude. And if he threatens Yuuki or Kaname again, Aidou may have to take more serious measures in dealing with him.]