Warning: You probably shouldn’t watch the latest trailer for director Takashi Ishii’s “Amai Muchi” (aka “Sweet Whip”) while at work, church, or in a public setting. You’re going to get a lot of weird and uncomfortable looks if you do, and I really don’t want that to happen to you. Unless, of course, you’re into that sort of stuff. If so, by all means, have at it. Ishii’s latest movie is the latest effort from a director who often blends sex and violence in a very visceral way. Although his previous movies had a penchant for this sort of stuff, none of were as quite extreme as the trailer for “Amai Muchi.” Here’s a handy synopsis: Based on a novel by Kei Oishi, the film stars Mitsu Dan as a 31-year-old woman named Naoko who leads a double life. While in high school,...