Lyric discussion by roachbubblegum 

I thought it meant the same as everyone else wrote above, but I think it could also be about eating disorders.

When she (lets call her A) eats, she feels disgusting, fat and horrible, because a person (let's call that person B) made her think she was overweight when she wasn't. She's so frustrated and she thinks everyone sees her in bad eyes, and she doesn't eat anything anymore except for human flesh (either literally or figuratively). Ex. "I can't exist anymore, till I destroy you-" A's going to starve herself as long as B is alive. "Am I incurable"- Anorexics never fully cure. Ex. "I will ingest you, so to protect you, then they can't take you away from me"- B isn't one of the things she isn't allowed to eat on a diet. "Becoming see-through-" Either (or both) she is emanciated, or people are discovering her secret.

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