Downloading Face Swap Live? $0.99. Experimenting on your grandparents with it? Priceless.
At least for U.K. user Charley Stillwell, who recently uploaded a video of her grandmother, "Nanny Noo Narr," as she attempted to sit through the tutorial and, eventually, experienced an (understandable) meltdown over the app’s face filters. Watch her hilariously dramatic reaction to swapping faces with Justin Bieber, Marilyn Monroe and Beyoncé, who Nanny Noo Narr reveals "she doesn’t like at all" in one head-scratching moment. (Seriously, who wouldn't want to briefly swap faces — or lives — with Beyoncé?)