Sherlock: Four people are dead - there’s no time talking to the police.
John: So why are you talking to me?
Sherlock: Mrs. Hudson took my skull.
John: So I’m basically filling in for your skull.
Sherlock: Relax, you’re doing fine. Well?
John: Well what?
Sherlock: Well, you could just sit there and watch telly.
John: You want me to come with you?
Sherlock: I like company when I go out and I think better when I talk aloud. Skull just attracts attention. Problem?
John: Yes, Sergeant Donovan.
Sherlock: What about her?
John: She said you get off on this. You enjoy it.
Sherlock: And I said dangerous, and here you are. [leaves]
John: [beat] Damnit.
Sherlock 1.01 - “A Study in Pink”