Greg James, James Corden and Ruth Jones play Sit Down Stand Up, calling Gavin and Stacy cast members to guess whether they're sitting or standing when they pick up. Matt Horan (Gavin) is predictably standing, but the real chaos erupts when Ruth's phone reveals a mysterious Swiftie listening to Taylor Swift, leading to a hilarious debate about which cast member is the secret Eras Tour superfan—with Nessa delivering an iconic defence of the three-and-a-half-hour masterpiece. The prank reaches peak comedy when they call Bonnie Tyler completely out of the blue, catching her mid-celebration.