lolwut first tab, easy song, been tabbed many times...I'm quite certain this is 95% Accurate, after spending hours reviewing live performances on youtube and the music video.  

Intro [They're 10th frets :P)
G----------------------------------------------------------------------------------I
D----------------------------------------------------------------------------------I x2
A-0000000000000000-33333333-----------0000000000000000-33333333-1010101010101010---I
E---------------------------33333333-----------------------------------------------I 

Verse
G----------------------------------------------------------------------------------I
D----------------------------------------------------------------------------------I x2
A-0000000000000000-33333333-----------0000000000000000-33333333-1010101010101010---I
E---------------------------33333333-----------------------------------------------I 

Chorus
G---------------------------------------------I
D---------------------------------------------I x3
A----------33333333---------------------------I
E-11111111----------00000000-55555555---------I 

G---------------------------------------------I
D---------------------------------------------I x1
A----------33333333---------------------------I
E-11111111----------0000000000000000----------I 

Intro
G----------------------------------------------------------------------------------I
D----------------------------------------------------------------------------------I x1
A-0000000000000000-33333333-----------0000000000000000-33333333-1010101010101010---I
E---------------------------33333333-----------------------------------------------I 
Verse
G----------------------------------------------------------------------------------I
D----------------------------------------------------------------------------------I x1
A-0000000000000000-33333333-----------0000000000000000-33333333-1010101010101010---I
E---------------------------33333333-----------------------------------------------I 

Chorus
G---------------------------------------------I
D---------------------------------------------I x3
A----------33333333---------------------------I
E-11111111----------00000000-55555555---------I 

G---------------------------------------------I
D---------------------------------------------I x1
A----------33333333---------------------------I
E-11111111----------0000000000000000----------I 
Breakdown/Bridge
G---------------------------------------------I
D---------------------------------------------I x1
A---------------33-2-3------------------------I
E-55-3-5-55-3-5-------33-1-333333-55-3-5------I 

Intro/Bridge 2
G----------------------------------------------------------------------------------I
D----------------------------------------------------------------------------------I x1
A-0000000000000000-33333333-----------0000000000000000-33333333-1010101010101010---I
E---------------------------33333333-----------------------------------------------I 

G---------------------------------------------I
D---------------------------------------------Ix1
A-0000000000000000-33333333-------------------I
E---------------------------33333333----------I 


Final Chorus/Outro
G---------------------------------------------I
D---------------------------------------------I x5
A----------33333333---------------------------I
E-11111111----------00000000-55555555---------I 

G---------------------------------------------I
D---------------------------------------------I x1
A----------33333333------------------0~-------I
E-11111111----------0000000000000000----------I