California kindergartner Dani stunned her parents in May when she addressed her mom, who said she was going to the eye doctor, in a polished British accent: “Mummy, are you going to the optician?”

“And we were like, ‘the what?’ “ says Dani’s father, Matias Cavallin. “That’s like a college-level word,” he says. “At least, I wasn’t using it.”