In You Are Having a Good Time, Amie Barrodale’s collection of highly compressed and charged tales, the veneer of normality is stripped from her characters’ lives to reveal the seething and contradictory desires that fuel them. In “Animals,” an up-and-coming starlet harbors a complicated attraction toward her abusive director. In “Frank Advice for Fat Women,” an ethically compromised psychiatrist is drawn into the middle of a dysfunctional mother-daughter relationship. And in “The Imp,” a supernatural possession ruins a man’s relationship with his pregnant wife.