What I love about this lyric is how literal it is. Of course, pretty much all Jens lyrics are pretty literal and fact-filled, but in this case the title stands exactly for what is trying to say and it's not really a metaphor although it may sound as one. All the cells on his body has been replaced after several years by cell division, but since memory exists on the DNA, everything that his body grows, including even the smallest of hairs, carries the memory of his ex.
What I love about this lyric is how literal it is. Of course, pretty much all Jens lyrics are pretty literal and fact-filled, but in this case the title stands exactly for what is trying to say and it's not really a metaphor although it may sound as one. All the cells on his body has been replaced after several years by cell division, but since memory exists on the DNA, everything that his body grows, including even the smallest of hairs, carries the memory of his ex.