The speaker is a teenager caught between who they used to be and who they feel they are now. They start by describing their mood as musical chords, D Seventh, F Minor, E Minor, as if they can't tune their feelings. The cold air conditioner and the "sunny days" that come with an alcoholic father show a gap between how things look and how they feel at home.
The speaker misses a softer, happier past self, "white-toothed, tanned, and long haired," while now seeing themselves as a "vampiric-looking, short haired queer," all "sharp edges and teeth." There's self-doubt here ("a girl (am I?)") and a fear of hurting others. The mood is raw, tired and restless, but it ends on a hopeful turn. Rebellion, the speaker says, means breaking yourself apart to keep what you like, so you don't build a life on what you dislike about yourself.