To me, the part about "playing hospital" and questioning how authentic the wounds are seems like it may be about self injury. This is a common theme in Amanda's songs (Bad Habit, for example), and it seems as if it may hold true here, as well, even if in a minor way. It seems that she's been trying to pass off the wounds as accidents, and someone (probably someone she's "with") sees right through it.
To me, the part about "playing hospital" and questioning how authentic the wounds are seems like it may be about self injury. This is a common theme in Amanda's songs (Bad Habit, for example), and it seems as if it may hold true here, as well, even if in a minor way. It seems that she's been trying to pass off the wounds as accidents, and someone (probably someone she's "with") sees right through it.