Short people that live underground and kidnap Vikings to work in their gnome mines unless that Viking has a hideous name to ward them off with?

[Hiccup rubs his chin, obviously thinking his idea over.]

Come to think of it, we can probably rule gnomes out just on the basis that both of our names are terrible. Unless 300 years worth of Hairy Hooligans were wrong about that particular bit of information. Which wouldn't surprise me.