There’s been a lot of nasty things on Game of Thrones. Daenerys ate en entire raw horse heart and almost yakked it up. People’s heads and hands got chopped off. That whole weird poop-porridge-poop montage that the world had decided to purge from its collective memory. But of all the gross stuff that’s shown up on Thrones, the show’s own Nikolaj Coster-Waldau says one scene was particularly gross and may have been too much even for him.