"House of the Dragon'' stars stumped about hoagies

Driving the news: Cast members from HBO's popular series "House of the Dragon'' are going viral after they struggled mightily to describe our city's favorite sammy during an episode of BuzzFeed's Puppy Interview.

• Fabien Frankel, who plays knight Criston Cole and is filming another HBO series in town, cited cheesesteaks — specifically, Angelo's — as his favorite American food, flabbergasting his fellow Brits.

Their reaction: Emma D'Arcy, who leads as Queen Rhaenyra, couldn't wrap their mind around the concept, prompting a discussion on the differences between a baguette and a hoagie roll.

• Olivia Cooke, who plays Alicent Hightower, helpfully chimed in that it's "like a hot dog." (It's not.)

The bottom line: Emma, you can get cheesesteaks in London.