There comes a time to use a certain app to replace the faces of music industry superstars with one’s own face in a half-brilliant, half-grotesque parody of the biggest charity anthem of the 1980s. Co-written by Michael Jackson and Lionel Richie and famously produced by Quincy Jones with an all-star celebrity choir, 1985’s “We Are The World” brought together a staggering assortment of chart-topping singers ranging from Bob Dylan to Diana Ross to Willie Nelson. At the time, comedian Kevin Meaney famously worked the pious song into his act, contorting his face and body to impersonate the parade of celebrity soloists who appeared on the record. He donned sunglasses to portray Steve Wonder, got on his knees to impersonate height-challenged Paul Simon, and squinted mightily to convey the passion of Bruce Springsteen. But as YouTube’s Rhett LeCompte demonstrates, all it takes these days to impersonate the stars of “We Are The World” is the self-explanatory Face Swap smartphone app.