Jimmy Fallon, Jimmy Kimmel and Seth Meyers crack up at the error, while Stephen Colbert and Busy Philipps have theories on how it wasn't a mistake at all.
It was the cup seen 'round the world, and now everyone wants to know the Khaleesi's order at Starbucks after a shocking gaffe by the production team at HBO's "Game of Thrones," and late-night had an absolute field day with it.
In what quickly became the biggest story of the day on Monday, eagle-eyed fans noted that during a celebration feast during Sunday's broadcast, a cup that certainly looked like something from Starbucks could be seen sitting on the table in front of Daenerys (Emilia Clarke) as she looked on unhappily. Maybe her order was wrong?
Executive producer Bernie Caulfield was just as shocked as the rest of America at the mistake, telling WNYC, "I can't believe [it]. Our onset prop people and decorators are so on it. 1,000 percent. I just honestly can't… Nowadays you just can't believe what you see, because people can put things into a photo that really doesn't exist, but I guess, maybe it was there. I'm not sure. We're sorry! Westeros was the first place to actually have Starbucks. It's a known fact."
Have to say, though, that's a missed opportunity to prove you know your stuff, though, Mr. Caulfield. Should have wrapped that with, "It is known."
Stephen Colbert kicked off the festivities with a "lost scene" from "Game of Thrones" featuring Daenerys trying to get her order from the Westerosi Starbucks. And if you think they got her name right, you've obviously never been to Starbucks.
Colbert followed up his "lost scene" with an explanation as to how that cup was not a mistake, which Busy Philipps took even further. Jimmy Kimmel, Jimmy Fallon and Seth Meyers couldn't resist joining in on the fun, either.
"The show is legendary for constantly adding surprising new characters and last night they introduced a doozy, Latte of House Starbucks," Colbert said, showing the screenshot that took social media by storm. "That is the biggest anachronism in popular fantasy since Gollum's Big Gulp.
But, he wasn't quite ready to call it a mistake ... even if HBO and the show's creators have already admitted it was. "'Game of Thrones' does not make mistakes," he said. "Not even Ed Sheeran's cameo."
Let's just say he then jumped on a train to crazy town with his theory that somemhow wound up with Daenerys possessing the Infinity Gauntlet from the "Avengers" franchise. That said, we do like the idea of her being called the Unburnt because her coffee beans are always perfectly roasted.
Just like Colbert, Busy Philipps rejected the mistake excuse and sought to make the cup canon. Emboldening her even more is the fact that she only started watching the show with last week's episode, making her an absolute expert on all things "A Song of Ice & Fire."
"That rogue cup was 100 percent not a mistake," she said. "I've been working on television sets for over 20 years. You're telling me the script supervisor of 'Cougar Town' always noticed when my Chapstick was in frame but no one from PA to directors to editors on the most popular, expensive show on HBO noticed that a full-blown cup of coffee was in Dragonville? I'm not buying it."
And since it can't possibly be a mistake, it's presence has to be justified. "Is this show about a bunch of cosplayers in the future who have taken it too far but still need their chai lattes? Maybe," Philipps said. "Is this just 'Jumanji' but with zombies and dragons and f--king ... lots and lots of f--king?
But then she presented her most brilliant theory yet, and one that might prove to be the secret truth that never gets revealed. "Did that cup's placement pay for last week's episode?" she asked. "Will the final scene of the show just be that cup sitting on the throne?"
Jimmy Kimmel couldn't help but joke about the incredible growth and spread of the coffee brand. "I knew there were a lot of Starbucks, I didn't know they'd expanded to Winterfell," he joked. "I didn't know there was a House Macchiato now."
But he laughed even harder at the social media reaction to the error. "A lot of people online said it ruined the episode and made it seem not real," he said. "Right, because a Starbucks cup is what makes the show feel not real; not the dragons, not the zombies made of ice; the coffee cup on the table."
Seth Meyers went with the easiest Starbucks joke on the planet. He wasn't the only late-night comedian to make the joke, but he was the only one to make it his only joke about the episode.
"A Starbucks coffee cup was visible on a table in a scene from last night's episode of 'Game of Thrones,'" he said to set it up, then showing a coffee cup with Daenerys Targaryen's name on it. "And this is even crazier, they spelled her name correctly."