Dracarys is High Valyrian for dragonfire in Game of Thrones, the command Daenerys Targaryen uses to order her dragons to attack. The Lannister version comes from the 2017 season seven battle where Drogon burns the Loot Train convoy, one of the show's most shared scenes. Clips of the word alone, and of the attack that follows, spread widely on YouTube and social media as a reaction to overwhelming force. It remains popular in fan edits, gaming videos, and memes about instant destruction.