'Twas the Starbucks cup seen around the world—including Westeros.
In the fourth episode of the HBO fantasy hit's final season, "The Last of the Starks," the gathered forces at Winterfell celebrate their victory over the Night King, as they have every right to. During the drunken celebration, Tormund (Kristofer Hivju) sang the praises of Jon Snow (Kit Harington) and his ability to unite forces, ride dragons and come back to life after being murdered by his own men.
But during the cheering, fans were distracted because they could see a modern coffee cup sitting in front of an unhappy Daenerys Targaryen (Emilia Clarke). The internet went wild(ling), launching a thousand memes inspired by the faux pas.
In response to inquiries about the gaffe, HBO said in a statement: "The latte that appeared in the episode was a mistake. Daenerys had ordered an herbal tea." Alas, the network later edited the mistake from future airings of the episode.