Itachi looked on, considering his question, and then his mouth shaped in a faint but amused smirk. "Curiosity. Being offered a joint and an address isn't something that occurs regularly in my line of work."
He understood now, in a vague way, and was impressed that this strange kid had not considered him a badge. Under other circumstances, and perhaps in the low light of a club, Itachi would have tried to pick this kid up. He liked things that were out of the norm with some degree.