Lyric discussion by caffeination 

this song's clearly relative to the character in valley of the dolls, otherwise the names wouldn't be identical. but ultimately it's about an eating disorder. the reference to throwing up could be a variety of things, but generally after a person has been inducing vomiting for a while they're skin turns the yellow color conor describes. "do you think that someone paints your mirror?" inforces the distorted view of an eating disordered person, and "the blurs that you see" are an effect of malnutrition. the sudden discovery of not being who you used to be is what typically happens when someone is so caught up in maintaining their illness that they don't seem to notice their gradual weight loss, and they feel as if it happened overnight. that might be why conor adds the bit about swallowing sleep. the unrecognizable behavior is the odd ways eating disordered people live, the way they divide their food, the way they chew every piece of food in no more or less of a certain amount of bites (of course, each behavior is specific to the individual). the first time i heard this song i understood the swallowing of sleep as not sleeping at all, as if to say that it is all you swallow. when people are malnourished they become shockingly manic and tend to get very little sleep. just my input.

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