It asks to click on the person who is "real", which gets a bit strange when "real" seems to be someone in green contacts and a wig for cosplay: https://www.whichfaceisreal.com/realimages/12481.jpeg

Biggest issue seems to be a number of images of people consuming their deformed selves: https://www.whichfaceisreal.com/fakeimages/image-2019-02-18_... https://www.whichfaceisreal.com/fakeimages/image-2019-02-17_...