The star of a viral sex video comes into contact with an over-eager fan at a empty movie theater. Pepi Ginsberg directs “Swallow Grass Snakes,” a dark drama about the perils of online fame and an unpredictable intrusion into a young woman’s private life. | Director, producer, editor: Pepi Ginsberg. Starring Gus Birney, Jefferson White, Luca Sabine.