The strum timing on this one is kinda weird it's like this: 
1234 1 1234 not hard but you'll get it just listen to the song 

Intro 
G{-------------------------------------------------------------} 
D{-6-----------6------6-----7------7-----6------6------4-------} 
A{-4ring out-44-4-4-44-4-4-------------44-4-4-44-4-4-22-2-2-2--} 
E{------------------------55-5-5-55-5-5----------------------0-0 

G{-------------------------------------------------------------} 
D{------6------6--------------------4------4-------------------} 
A{----44-4-4-44-4-4-5555-5-5555-5-22-2-2-22-2-2-00-000-00-000-00 
E{-0-0---------------------------------------------------------} 
G{-------------------------------------------------------------} 
D{-------------------------------------------------------------} 
A{-000-4444444444444444 into verse-----------------------------} 
E{-------------------------------------------------------------} 

Verse 
G{-------------------------------------------------------------} 
D{-------------------------------------------------------------} 
A{-------------5-------4-4444-4-4-4-555-777--------------5-----} 
E{2-2222-2-2-2--5-5-5-5---------------------2-2222-2-2-2--5-5-5- 

G{-------------------------------------------------------------} 
D{-------------------------------------------------------------} 
A{-55-5-44-4-22-2----------------------------------------------} 
E{5--------------00-0 play twice and move into shump shump thing 

The shump shump "fall" thing 
G{-------------------------------------------------------------} 
D{-------------------------------------------------------------} 
A{-------------------------------------------------------------} 
E{22-2-22-2-22-2-22-2-22-2-22-2-22-2-22-2 play this forever----} 
Or 4 times and ring out the last 
note 

G{-------------------------------------------------------------} 
D{-11----------------------------------------------------------} 
A{-9pop that octave--------------------------------------------} 
E{-----and pause-----------15slide this sucker down to->2and then 

Outro 
G{-------------------------------------------------------------} 
D{-------------------------------------------------------------} 
A{-------------------------------------------------------------} 
E{22222---22222-22222-11111---11111-11111-play this 4 times----} 

Then make a slide from the first fret to the seventh (as shown below) but 
mute it there and hit on the A string 9th fret. 
G{-------------------------------------------------------------} 
D{-----------------10--10-10-10-10--------11---------------10--} 
A{---9--9-999-9-99-8---8--8--8--8---8-8-8-9---9-9-999-9-99-8--8} 
E{1/7mute------------------------------------------------------} 

G{-------------------------------------------------------------} 
D{-----------4-------------------------------------------------} 
A{88-88-88-8-4-------------------------------------------------} 
E{-----------2ring out and done--------------------------------}