Something like that. [Loki seems to get it, so Hiccup is glad he doesn't have to elaborate. It's easy to shift the subject, because he lights up with a craftsman's curiosity when Loki mentions lighter metals.]

Lighter? Like what? That would open up a lot more possibilities, for the tail-fin and for my flight suit... [It's hard to tell if he's talking to himself or his conversation partner at times.] Oh. But I haven't seen a forge here.