I'm pretty sure the "I want bones like iron/blood like mercury/so i can tell you when i'm rising/when i'm sinking in" line is saying he wants to be able to say what hes feeling. He wants to stand up for himself when he gets mad or heated, hense mercury, like they put in thermometers, and be strong enough to admit when hes upset about something, and be able to talk about it, because sinking kind of gives me a depressed image. Tell me what you think or what the rest of the song could mean based on that.
I'm pretty sure the "I want bones like iron/blood like mercury/so i can tell you when i'm rising/when i'm sinking in" line is saying he wants to be able to say what hes feeling. He wants to stand up for himself when he gets mad or heated, hense mercury, like they put in thermometers, and be strong enough to admit when hes upset about something, and be able to talk about it, because sinking kind of gives me a depressed image. Tell me what you think or what the rest of the song could mean based on that.