There's a difference between being intelligent and being sensible. Getting bumped ahead a few grades doesn't automatically bump you up the maturity ladder at the same time.

I've told Sherlock about a bit of it, though not all and I haven't said much about it lately. But if the fact that he told what happened at his manor is anything to go by, surely he's already passed some of the stories onto you.

... only you would compare a skull to a chew-toy. Fine, I'll go along with it. I'm not the best liar, so no promises that it'll work out. And if he thinks I'm hiding it in my trunk and he gets it in his head to sneak into my bed curtains while I'm sleeping again, it'll definitely be your fault.