Lyric discussion by RubyDJane 

When I first heard this song, I also thought it was literally about death. But, I couldn't figure out how anything made sense with that interpretation. Now, I imagine this song is in the middle of a scenario where the guy is pissed at his girlfriend after finding about her past and she initially tried calming him down.

"deadly positions"-- Deadly in the seductive sense. Perhaps she was trying to be charming/seductive to change the atmosphere. "Her fingers graze my neck for the last time" -- Her touch & charm wasn't working on him. "Her lungs are spilling out" -- she's trying to sweet-talk him out of the argument.

Chorus -- He's telling her off, as well as trying convince himself he doesn't need her.

"i see the victims of the deadliest poison"-- he's remembering and probably confronting her past.

"my face has turned her skin chalk white"-- he's probably pissed and she's either guilty for being caught or afraid of his anger.

"my only poison"-- even though he knows she's bad for him, he's still addicted to her and can't quite let her go.

I don't understand how to interpret the other stuff though: "Let's see, let's cut of all her long blond hair" -- Is he just saying that out of anger? "What's keeping me alive?/ What's keeping her alive?" -- is "alive" supposed to contrast her "deadliest positions"?

"Let's see, there's footprints trailing out of the morgue"-- does this refer to seeing the route of her cold-heartedness?

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