> > Hiding? Sulking? Steph might have to go prod him until the irrational Princeling afraid of nothing and no one comes out. ^_^

Welcome to try if you can find him. You don't get raised by a combination of international ninjas and Batman and not get pretty good at hiding.

> Failing that, I'm sure tall, dark, and brooding walking into the living room with a snide remark about the change (or lack thereof) in locks will pique Damian's interest. Or warrant a Batarang. Whichever.

I'm not sure piquing his interest and warranting a Batarang are mutually exclusive since we've established that he booby-traps Wayne Manor for fun. Or maybe just because he feels like a home without secret hidden deathtraps doesn't feel very home-y.