It had been a long day. He was tired. He just wanted his teenage step-daughter Tegan, from the indie pop duo Tegan and Sara, to stop blasting the same album over and over. Besides, he hated Nirvana, which was just then about the biggest band in the world. So he told her to turn it off. He told her the music was driving him insane.He was well within his rights\u2026up until the point that he made a joke about Kurt Cobain\u2019s sexuality. He should have known better. As Tegan explains in her fascinating...