What 's the song 'Blood' by MCR about?!

Question: Like isn't about an insane guy on the gurney, or something, and whenever the nurses come to give him the crazy-shots, they get his blood??
O_o

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Answers: Like isn't about an insane guy on the gurney, or something, and whenever the nurses come to give him the crazy-shots, they get his blood??
O_o

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http://www.songmeanings.net/lyric.php?li...

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