The line comes from Elf, the 2003 Christmas comedy about Buddy, a human raised by elves at the North Pole who travels to New York. In the film, elf practice is part of the cheerful, toy-making world Buddy grew up in, which is why the question sounds so earnest despite being about something fantastical. Online, the clip spread as a meme sound for calling out anyone who failed to show up, from sports teams to friend groups. Its festive wording keeps it light, so it still works for holiday jokes and everyday missed plans alike.