By Michael O’Sullivan, The Washington Post Art can make us squirm. That’s the theme of “Nocturnal Animals,” a theme telegraphed with almost sadistic clarity as we watch, under the opening credits, a series of obese naked women shimmying in slow motion, their folds of voluminous flesh wielded like weapons. Those videos, as it turns out, are works of art on display in the Los Angeles gallery of Susan Morrow (Amy Adams), a contemporary art dealer who, over the course of writer-director Tom Ford’s creepily elegant, enigmatic new film, encounters several others.