Aimee Mann's I Was Thinking I Could Clean Up For Christmas appears to tell a story from a drug (heroin?) addict's point of view. She wants to kick her habit and then end her life. Bittersweet, in true Aimee Mann fashion. Funnily enough, this is not on her Christmas album, One More Drifter in the Snow; it can be found on 2005's The Forgotten Arm.
Aimee Mann - I Was Thinking I Could Clean Up For Christmas