Its pretty obvious that it has two meanings. One, that he's trying to kick his drug habit, and compares it to a habit like biting nails. Two, he's addicted to sex with his ex girlfriend. I like the last one better because too many songs "could" be about drugs.
Its pretty obvious that it has two meanings. One, that he's trying to kick his drug habit, and compares it to a habit like biting nails. Two, he's addicted to sex with his ex girlfriend. I like the last one better because too many songs "could" be about drugs.