The song "Na Na Na" by Christopher Martin is about a man who is infatuated with a particular woman. He expresses his desire for her and how she satisfies him in every way. He tells her that she is the only one he wants and that no other woman can compare to her. The lyrics convey a sense of longing and admiration for this woman, and the singer is completely captivated by her. The repeated "na na na" in the song adds to the catchy and infectious nature of the melody, enhancing the overall romantic and passionate vibe of the song. Overall, the song is a declaration of love and desire for a special woman.