Lyric discussion by theendisnigh 

I have an interesting take on this song. I believe this song is a sequel to Pray for Plagues from the girls point of view.
Depending on how you interpret Pray for Plagues it all basically comes down to Oli knowing a whore and how it messed up her life. If you look closely he uses some of the same words.

Pray For Plagues= "Eradicate this disease" Chelsea Smile= "This disease is getting worse"

Pray for Plagues= "Count your fucking blessings" Chelsea Smile= "I've counted my blessings, now I'll count this curse"

Pray for Plagues= "Pray for plagues" Chelsea Smile= "Pray for forgiveness"

Before Oli says, "Eradicate this disease" he says "Christ I'm asking you for just one thing." That one thing would be to help the whore he knows. In Chelsea Smile when he says, "I look up to the sky, there may be nothing there to see. But if I don't believe in Him, why would He believe in me?" I believe it's from the girls point of view and her internal conflict with God and His existence and/or His love for her.

Furthermore, when Oli says, "I may look happy, but honestly dear, the only way I'll really smile is if you cut me ear to ear. I see the vultures, they watch me bleed, they lick their lips as all the shame spills out of me." I think the girl is saying how she regrets her actions so much it's almost impossible to make her smile/happy. I think the vultures he talks about are men who see she's filled with shame and see her as an easy target to be taken advantage of. "They lick their lips, as all the shame spills out of me." Maybe the girl is venting her problems to a man and all he sees is an easy target as he licks his lips.

Sorry if I wasn't clear on anything but I really love this song and thought I'd throw this out. I don't know if it's correct but I'd love to read more interpretations.

that seems like a good interpretation of the song

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