Nikolaj Coster-Waldau was on Conan this week talking about Game of Thrones, and some fake spoilers.. When Nikolaj was in Stockholm, he did a Q&A for HBO Nordic. He ended the video by holding up a duck, and claiming it was a spoiler for book readers. Now, as you may know, this sent most book readers into a frenzy, guessing what it might mean. Unfortunately it would seem that it was actually nothing, and for some reason Nikolaj just had a duck laying around.