"She eyes me like [what I am, which is] a Pisces, when I am weak" - Meaning, “she can see through me, and she knows when I am most vulnerable/can be taken advantage of” (Kurt is a Pisces)
"I've been locked inside your heart-shaped box for weeks" –
The “heart-shaped box” is imagery for vagina, but it also has secondary meaning as a lifeless, loveless, pretend relationship (i.e. it’s a box that is shaped like a heart, versus a real heart with real love). He expresses how he doesn’t know how to get out of this cyclical problem (that’s why he’s “locked inside”…“for weeks”) of pretending they have a good and loving relationship, when they really don’t
"I've been drawn into your magnet tar pit trap" –
Magnet tar pit trap refers to bad feelings or attitudes or sentiment that his partner experiences, that he also gets drawn into. Her feelings are contagious to him so he starts to “turn black” also.
"I wish I could eat your cancer when you turn black" –
He wishes he could eat her cancer (referring to a general sadness/pain she experiences, that also grows like a cancer would grow) "when you turn black" - when she gets sad/angry, etc. He wishes it was as easy as picking up a fork and physically removing the problems she has. Courtney is a Cancer (astrologically speaking) so he is also referring to her holding grudges and being a general cunt (Cancers are known for holding grudges and not forgiving people, and are sensitive people)
“The hey, wait...I've got a new complaint…” part is about them arguing. Kurt is sarcastic when he says, “I’m forever in your debt for your priceless advice”. It's a cutting statement, that means the opposite of what it actually says. “I think you're a fucking idiot”, is what it really says.
"Meat-eating orchids forgive no one just yet" - referring to how Courtney holds grudges (meat-eating orchid is a vagina). Courtney is a Cancer, and Cancers are known for holding grudges. He is tormented by how long she holds these grudges and how it is reflected in their sex together.
"Cut myself on angel hair and baby's breath" –
The imagery is: you think you're handling something soft and sweet, but you're getting cut. Logically, it is the opposite of what you think it should be. This refers to their relationship, in that "we should love each other and care about each other, but we actually harm each other. We pretend we care about each other, but we’re actually harming each other”
"Broken hymen of your Highness, I'm left back" - kurt feels he is secondary to courtney's feelings (broken hymen is only something courtney can have, and he feels she puts her problems/feelings in front of his problems and feelings. He gives up on fighting with her ("i'm left back") when she starts to argue about things he doesn't understand because he can't experience them (her broken hymen). he also calls her "your Highness" to show sarcasm about how he thinks she is a royal bitch, like he has to obey her needs, but his are disgarded as not mattering.
"Throw down your umbilical noose so I can climb right back" –
Even when he knows she is being inconsiderate and crazy, he willingly goes back to living in a mentally crazy world with her. He is also part of the problem, and he recognizes that. He's frustrated because doesn't have any idea on how to fix the problem.
Just my opinion:
"She eyes me like [what I am, which is] a Pisces, when I am weak" - Meaning, “she can see through me, and she knows when I am most vulnerable/can be taken advantage of” (Kurt is a Pisces)
"I've been locked inside your heart-shaped box for weeks" – The “heart-shaped box” is imagery for vagina, but it also has secondary meaning as a lifeless, loveless, pretend relationship (i.e. it’s a box that is shaped like a heart, versus a real heart with real love). He expresses how he doesn’t know how to get out of this cyclical problem (that’s why he’s “locked inside”…“for weeks”) of pretending they have a good and loving relationship, when they really don’t
"I've been drawn into your magnet tar pit trap" – Magnet tar pit trap refers to bad feelings or attitudes or sentiment that his partner experiences, that he also gets drawn into. Her feelings are contagious to him so he starts to “turn black” also.
"I wish I could eat your cancer when you turn black" – He wishes he could eat her cancer (referring to a general sadness/pain she experiences, that also grows like a cancer would grow) "when you turn black" - when she gets sad/angry, etc. He wishes it was as easy as picking up a fork and physically removing the problems she has. Courtney is a Cancer (astrologically speaking) so he is also referring to her holding grudges and being a general cunt (Cancers are known for holding grudges and not forgiving people, and are sensitive people)
“The hey, wait...I've got a new complaint…” part is about them arguing. Kurt is sarcastic when he says, “I’m forever in your debt for your priceless advice”. It's a cutting statement, that means the opposite of what it actually says. “I think you're a fucking idiot”, is what it really says.
"Meat-eating orchids forgive no one just yet" - referring to how Courtney holds grudges (meat-eating orchid is a vagina). Courtney is a Cancer, and Cancers are known for holding grudges. He is tormented by how long she holds these grudges and how it is reflected in their sex together.
"Cut myself on angel hair and baby's breath" – The imagery is: you think you're handling something soft and sweet, but you're getting cut. Logically, it is the opposite of what you think it should be. This refers to their relationship, in that "we should love each other and care about each other, but we actually harm each other. We pretend we care about each other, but we’re actually harming each other”
"Broken hymen of your Highness, I'm left back" - kurt feels he is secondary to courtney's feelings (broken hymen is only something courtney can have, and he feels she puts her problems/feelings in front of his problems and feelings. He gives up on fighting with her ("i'm left back") when she starts to argue about things he doesn't understand because he can't experience them (her broken hymen). he also calls her "your Highness" to show sarcasm about how he thinks she is a royal bitch, like he has to obey her needs, but his are disgarded as not mattering.
"Throw down your umbilical noose so I can climb right back" – Even when he knows she is being inconsiderate and crazy, he willingly goes back to living in a mentally crazy world with her. He is also part of the problem, and he recognizes that. He's frustrated because doesn't have any idea on how to fix the problem.