Toothless shares a look with Hiccup, and the boy laughs a little, patting the dragon's side. His eyes glint a little playfully as he says, "Offering your hand first is polite with dragons. If he noses your palm, it's okay, and if he bites it off, it's probably a no." It's a joke. Granted, if this were a wild dragon, it would be much less of a joke. Not that he's seen any wild dragons here.

"It should be fine, he won't bite. He'll let you know if you do something he doesn't like."