ACCORDING TO YOU= In your opinion.
If we say something “according to XX”, it means that this is what XX says, thinks or believes:
- According to the Romans, Spain was covered with forests from coast to coast. (that’s what Romans said)
- According to my mother, most teenagers are pathologically crazy (that’s my mother’s opinion)
- According to the weather forecast, tomorrow it’s going to rain a lot (that’s what they said on TV)

USELESS= Of no use, incapable of doing anything right.

DIFFICULT= A difficult person is someone who is difficult to live with.

HARD TO PLEASE= If someone is hard to please, it is very difficult to make them happy because they don’t like anything you do for them, they think everything’s wrong.

FOREVER CHANING MY MIND= Always changing my opinions.
When you change your mind, you start thinking in a different way. For example, you decide to paint the room red, but then you change your mind and decide to paint it blue.

I’M A MESS IN A DRESS= I look horrible wearing a dress because I don’t know how to wear it, I have no style. In western countries most girls always wear trousers today but wear a dress in special occasions because it is more elegant. But some girls are “a mess in a dress” because the are not used to it and feel like a man wearing a skirt.

SHOW UP ON TIME= Arrive on time (not late). If you show up in a place, you arrive there because you have a meeting or you are expected:
- I told Susan to come to the party but she didn’t show up (I was waiting for her or expecting her, but she didn’t come)

EVEN IF IT WOULD SAVE MY LIFE= We sometimes use this phrase to emphasize that you don’t want (or can’t) do something. So even if it were the most important thing in the world, you still wouldn’t do it (it’s an exaggeration, of course):
- I would never kiss you even if it would save my life (I prefer to die rather than kissing you) = I will never kiss you at all!!! Not for a million dollars!

HE CAN’T GET ME OUT OF HIS HEAD= He can’t stop thinking about me.

WANTED= She pronounces this word /wɒnɪd/. This pronunciation is quite common in America, because in most part of America the T may disappear after an N. This doesn’t happen in British English, but we sometimes find it in pop music due to an American influence.

I DON’T FEEL LIKE STOPPING IT= I don’t want to stop it.
If you feel like doing something, you want to do it.

TELL ME WHAT I GOT TO LOSE= Tell me: what can I lose? (got = have got). You use this expression when you have to make a difficult decision and you think: if I take this, it might be positive or negative, but it’s never going to be worse than the present situation, so I may win a lot, but I have nothing to lose.

HE’S INTO ME= He likes me a lot (usually in a romantic way).

HE’S INTO ME FOR EVERYTHING I’M NOT... ACCORDING TO YOU= He likes me for all the qualities you think I don’t possess.

BORING= Be careful with adjectives which can end in –ING or –ED:
- ING -- causing that effect on the others: She is boring, always talking about clothes.
- ED -- receiving that effect from the outside: She is bored, she doesn’t like the film.

MOODY= A person with frequent changes of mood (now they feel happy, now angry, now depressed, etc). Also a person who very often gets angry or depressed.

YOU CAN’T TAKE ME ANY PLACE= Every time you take me somewhere I feel bad or I don’t like it or I make you feel bad, or I embarrass you because I don’t know how to behave there, or I don’t fit... so it’s always a good idea.

I SUCK= (coll.) I’m a mess, I’m horrible.
If you suck at something, you do it terrible wrong: Tim sucks at cooking, he can’t even fry an egg!

CAUSE= (coll.) because. Also: cos, coz (BrE), cuz (AmE)

I ALWAYS GIVE IT AWAY= If you give a joke away, you say something that make people know what’s going to happen in the end, so it’s not funny. This is an example of giving a joke away:
- Ok, Do you know the story of the pregnant girl who was having dinner with his boyfriend’s parents and they asked her, “why are you getting so fat?”, and she... Oh no, I told you she was pregnant, right? Sorry, I spoilt the joke, I gave it away.

ATTENTION SPAN= Your attention span is the time you can be concentrated on one single thing. Sooner or later you get tired and your mind moves to something else. People with a short attention span can’t keep concentrated in one single thing for a long time (for example children). If she is the girl with the worst attention span it means that her attention span is very very short. In the song they use the superlative simply as a way of emphasizing the idea (she's not the worst, she is simply terribly at that).

PUTS UP WITH= Suffer. If you put up with something, you suffer its bad consequences:
- Why do I have to put up with all your stupid ideas?
- Sorry, I can’t put up with all this, I’m leaving.

APPRECIATED= Loved, valued.

LIKE I’M NOT HATED= (I need to feel like I’m not hated) = I need to feel that you don’t hate me.

SEE ME THROUGH HIS EYES= Think of me the same as he does.

IT’S TOO BAD= It’s a pity.
- I feel horrible, my boyfriend broke up with me and he’s going away.   - Oh, that’s too bad, I’m sorry.
- I have a spare ticket for the cinema, will you come?  - Too bad I can’t go, I’m having visitors tonight.