Maybe it’s a secret fantasy of girl-on-girl action that makes Ed Klein obsess about Sen. Hillary Clinton’s supposed lesbian ethos in his new book “The Truth About Hillary.” It’s hard to know what else he has to draw on. Yelling “lesbian” at powerful heterosexual women has always been the pathetic projection of the menaced male, but it’s especially baffling in Klein’s case. As the former editor of the New York Times Magazine, with some bestsellers behind him, Klein used to be a workmanlike scribe with glamour aspirations when he was flat-footing around in the Jackie O crypto-sphere. He’s not the usual sniper in the Republican stage army, which is perhaps why such paid-up members as the New York Post’s John Podhoretz have elected to play smart and trash the book, too. It doesn’t take a rocket scientist to figure out that misogyny is a sure boomerang.