"Polly" tells a disturbing story from the perspective of a perpetrator, based on the real-life abduction, rape, and torture of a 14-year-old girl. Written by Kurt Cobain, the song demands listeners confront the mindset of a rapist, with Cobain himself stating that sexual assault is one of the "worst crimes on earth" and that "what really needs to be done is teaching men not to rape." This raw and unsettling narrative makes "Polly," from Nirvana's second album Nevermind, a powerful and provocative piece. It's a song that forces an uncomfortable but necessary look into a dark corner of human behavior.