Alright Marcy Playground fans I bring you the first correct tab of MPs song 
"Opium" from their self titled album - Marcy Playground - Enjoy!
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NOTE:
The original tuning is in Drop D.
Exact chords used:
Bm - x24432
A - x02220
G - 5x000x
D - 000232
Em - 222000
E - 222100
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Intro: Bm, A, G, D, A - x2

Bm        A
Blue like water (water)
G         Em        D          A 
Blue like heaven is all of the time
Bm       A 
I'm all right
G         Em        D            A 
I'm just gagging on all the all right
E      Bm 
I'm so happy (happy)
    D               A
So happy (happy) Oh oh
E       Bm
I'm in heaven (heaven)
      D                 A
Yeah heaven (heaven) Oh oh 
G       Em               D  A D
Oh the season's come for opium 
D  A   D     A
mmMom..mmm..Mom
D  A   D     A 
mmMom..mmm..Mom 
E       Bm
I'm so happy (happy)
    D               A
So happy (happy) Oh oh
E       Bm 
I'm in heaven (heaven)
     D                  A
Yeah heaven (heaven) Oh oh 
G       Em               D A   D
Oh the seizures come from opium

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NOTE:
If you wish to play it in Standard Tuning use the following chords:
Bm - x24432
A - x02220
G - 320003
D - xx0232
Em - 022000
E - 022100
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