There was this video (I think it was an ad) that showed two people, separated by a mirror. The first one (I’ll call it the “original” one from now on) looks into the mirror and sees the “fake” one, who looks exactly like him. The video is focused on the life of the “fake” one, who lives in a dark hallway or something of the sort, where he has to run and/or wait for the other one to look into the mirror again.