I love how hard you’re pounding your little sister…how much you want to fuck her, to ravage her… Throughout her life, the speaker has been spoiled to death by her older brother (the listener), who has been looking out for her since she can remember. This has caused many repressed and complicated feelings in her related to him. However, when he tells her sister that he got a date, she feels instantly threatened. Surely, she’ll be mature about it and let him live his life, right?