Notice the use of the reference to the childhood game of Tag, "No takebacks", With this in mind the Come & Get It chorus of 'Na Na Na Na' could be interpreted as the childish taunt of 'Na Na Na Na'. Which puts the whole song in a different light and makes the elemental aspects of the music video make more sense.
Interesting lyrics.
Notice the use of the reference to the childhood game of Tag, "No takebacks", With this in mind the Come & Get It chorus of 'Na Na Na Na' could be interpreted as the childish taunt of 'Na Na Na Na'. Which puts the whole song in a different light and makes the elemental aspects of the music video make more sense.