I promise you that you were. All children are curious and explore on their own. You've probably just never been told about it.

[He just won't comment on the likelihood that Zuko's dad was a douchebag and how he probably had quite a staff of servants to watch over her. If he even cared that much, which he can't assume that he did...]

My dad loves to remind me how I used to slip into every nook and cranny on the Nova when I was young. Especially whenever I get myself into someplace I shouldn't NOW.