In an interview, Taylor Swift said that she got the inspiration for this song from the anime, "Death Note", hence the lyrics "I've got a blank space baby, and I'll write your name." Another example of the "Death Note" inspiration is the lyrics "Magic, madness, heaven, sin." Magic refers to how magical and strange it was to find the Death Note, madness to the way it can drive it's owner crazy, heaven refers to how the Death Note originally belonged to a god, and sin referring to the sinfulness of using the Death Note to kill people. The rest of the lyrics seem to refer to the plot of Death Note.