[ The kid promptly proceeds to jump, almost choking on his chocolate milk and Sherlock waits for him to find his voice, leaning back in his chair and watching him intently. Presumably, he's not quite used to being caught on the wrong foot like this - he files it away on his mental spreadsheet, no need to take something like that for granted, going forward. He also makes a note of his shirt of choice. After all, there's a joke he's actually capable of catching onto, which is a bit of a novelty and thus, moderately interesting. ]

Yes, indeed. [ He shrugs, mostly to work out a kink in his left shoulder. Thank you for that, kid. ] Honestly, I don't know why you over-reacted the way you did yesterday. You can't pretend it shouldn't interest me - you'd be curious too, if our positions were reversed.