This is quite an easy song, just the four chords from the intro. You can play them all 
barred, or not. Sorry about the end, I couldn't find the lyrics anywhere and you can't 
hear them very well when listening to the song.

Intro:

C, F, Am, F x2

Verse 1:

C                         F
He's got a feeling that I am pretty ugly
Am                          F
All our friends are hooked on crack, but he's smiling through
C                      F
Likes her anime hair and her pale skin
Am                      F
Goes for the chicks who don't really like fitting in
C                         F                             Am
There was even this one time we could see you getting really awkward around
F
him, which must mean she likes him

Chorus:
C              F                    Am
Back when the world was so much greater
               F                    C
back when the world was so much simpler
C               F                Am
And now the world is so much quicker
               F                   C
And now the world is so much bigger

Verse 2:
C                 F
I knew this one kid addicted to a love
Am                     F
you didn't feel it was correct but he still felt it anyway
C                             F
His parents took him to his church in skimpy wings, places,
Am                        F
Tried to get him into sports but he just liked to paint
C                           F
Now he's growing up all sheltered and self-loathing
Am                        F
Couldn't even start to think the things he did to get away

Bridge:
C  F      Am              F                      C
Ooh,this world seems so much better since we've gone
  F      Am                                   C
Ooh, feels like the whole world I am taking off
           F          Am                   F
All those people oh I wonder where they could have gone
            C           F
hopefully not too far behind us
Am Em  F
We've got to go back again soon
Am Em  F
We've got to go back again soon
Am Em  F
We've got to go back soon.

Instrumental Bit:
C, F, Am, F till the end of the song