Still, he guessed he couldn't really blame Vogg for scepticism. He knew Luna got it from everybody, back in his own time - not to mention that, even in this sleep-deprived state, he could tell that this man was very likely a muggle, and therefore he probably had never even seen a garden gnome.
He tried to carry on with the conversation in order to show he wasn't offended by the question. "Yeah, I've written a couple of books. One of them is about kelpies, actually. That's the species the Loch Ness monster belongs to," he added. "If you want to get a general idea of the magical creatures that are out there, though, I recommend a book my grandfather wrote before you check either of mine."