I saw a lot of tabs for this song but they were all awful
So I decided to tab it myself 
This is my first tab but I think It's pretty much right

Sum41 - Pain For Pleasure

INTRO
 
 Galloping
E------------------------------------
B------------------------------------
G----8-------------------------------
D----8-----repeated a lot--palm.muted
A----6-------------------------------
E------------------------------------
    

Main intro part
E----------------------------------------------------
B----------------------------------------------------
G-8-8----------6-6----------4-4----------3-3---------
D-8-8--3/4-3-1-6-6--3/4-3-1-4-4--3/4-3-1-3-3--3/4-3-1
A-6-6----------4-4----------2-2----------1-1---------
E----------------------------------------------------

E----------------------------------------------------
B----------------------------------------------------
G-8-8--3/4-3-1-6-6--3/4-3-1-4-4--3/4-3-1-------------
D-8-8----------6-6----------4-4-----------9--8--6--4-
A-6-6----------4-4----------2-2----------------------
E----------------------------------------------------

E----------------------------------------------------
B----------------------------------------------------
G----------------------------------------------------
D-9-8-6-9-8-4-9-8-6-9-8-2-9-8-6-9-8-1-9-8-6-9-4-6----(X2)
A----------------------------------------------------
E----------------------------------------------------


Verse & Chorus

E-------------------------------------------------------
B-------------------------------------------------------
G-8-8\6-6\4-4\3-3\6-8-8\6-6\4-4\3-3\6-8-8\10-10\11-11\13
D-8-8\6-6\4-4\3-3\6-8-8\6-6\4-4\3-3\6-8-8\10-10\11-11\13
A-6-6\4-4\2-2\1-1\4-6-6\4-4\2-2\1-1\4-6-6\-8--8\-9--9\11
E-------------------------------------------------------


Ending

E-----------------------------
B-----------------------------
G-8--11-8---8--4-4-4--6-6-6--8
D-8--11-8---8--4-4-4--6-6-6--8
A-6--9--6---6--2-2-2--4-4-4--6
E-----------------------------

E-------
B-------
G--8-6-8
D--8-6-8
A--6-4-6
E-------