Scene: John is chatting with Lestrade in a pub after a case perfectly solved
"What have you done to him?"
"No, you gotta show me the trick. How did you get him behave?"
"Easy. Satisfy his fantacies."
"And what ...don't tell me, I don't wanna know."
"You should check with Mycroft."
"No, thank you."
"Pirate. He always has a thing for pirate. You know, rescue me from some bloody evil monsters."
"I thought he had no intention to become a hero."
"Well, Sherlock has his own romance, hard to digest."