Critiquing The Song: Selena Gomez & The Scene's 'Falling Down'

Oh-Oh Oh-Oh OooOooh... Oh-Oh Oh-Oh 
Oh-Oh Oh-Oh OooOooh... Oh-Oh Oh-Oh 

You walk and talk like you're some new sensation.
You move in circles you don't need an invitation.
You spent your money, you can't get no satisfaction. 
You play it right so you can get the right reaction. 

What does moving in circles have to do with invitations? Is there something I'm missing here? I even did research. NOTHING ABOUT CIRCLES.

It won't be long my darlin' 
Pick up the phone nobody's on it.
Where are your friends, now baby? 
All of the ones supposed to be there for... 

This paragraph isn't as confusing as the first. But, still-- what won't be long?

You! When you're falling down, the worlds starts spinnin' 'round .
You! When you're falling down, no it's not all about.
You! When you're falling down, you know I'll be around, 
When you're falling down, falling down.

Okay, okay. I get it now... it won't be long 'till the person Selena's singing about falls down. I get it. What is this persons gender? I'll assume male, because she did say baby, but... who knows?

(Falling down, you're falling down, falling down.) 
What's out of place when you look into the mirror? 
The truth is blurry but the lies are getting clearer. 
Your eyes are fixed, your smile is so elastic.
You gave me roses but they're all just made of plastic. 

What is out of place when he looks into the mirror?

It won't be long my darlin',
Pick up the phone nobody's on it.
Where are your friends now baby? 
All of the ones supposed to be there for...

This song actually isn't half bad.

Smile for the camera, everybody's looking at you 
Smile for the camera, 'cause they're all about to trash you 
Smile for the camera, (camera, camera) 
Smile for the camera, who's gonna catch ya? 
Uuuuuh, oooooooh, uuuuh 
You (you) 

Okay. Now I'm confused. How would you not get caught smiling for a camera? That picture will be always and forever. Evidence of your smiling. What ya gonna do, burn the picture up? Arson.

You! When you're falling down, the worlds starts spinnin' 'round.
You! When you're falling down, now it's not all about 
You! When you're falling down, you know I'll be around
When you're falling down, falling down.

Maybe this is just me, but don't you think the world wouldn't do anything when he's falling down? 'Cause the world doesn't care what happens to him?

Smile for the camera, everybody's looking at you.
Smile for the camera, 'cause they're all about to trash you.

Slang lesson. Trash = ruin. They're all about to ruin him? If so, how will they do this 'ruining?'

This was not to insult any Selena Gomez fanatic. No. This is advice to songwriters everywhere.

It is Unknown.

I got the song lyrics: here

PS: I did have to change the punctuation that the website had, here. To fit the song more. Just periods and commas and so on.