Meghan Nesmith has Humanness covered. Cover Me in Humanness? Eewwwwwwwwwww. The naked, vaguely icky-sounding title turns out to be apt for a show that’s quintessentially Fringeworthy in its earnestness and its nascence. One of its four characters, a shy Groovy Movies store clerk with an irritating predilection for autobiography, is obsessed with the film Footloose, but the piece itself plays more like a Hal Hartley movie, following a pair of budding romances among unlikely…