Pissant
 

MAIN RIFF (These chord changes are quite fast)
|----------------------------------------------------|
|----------------------------------------------------|
|-----------7--7-7/9-9-9\4---------------------------|
|-2--2-5/7--7--7-7/9-9-9\4---------------------------|
|-2--2-5/7--5--5-5/7-7-7\2---------------------------|
|-0--0-3/5-------------------------------------------|

VERSE RIFF
|----------------------------------------------------|
|----------------------------------------------------|
|-------------7\----9\-------------------------------|
|-2\----2\----7\----9\-------------------------------|
|-2\----2\----5\----7\-------------------------------|
|-0-----0--------------------------------------------|

For the weird bendy sound, just slide your finger up
the 5th string (G#, usually A) and bend a fairly high
fret up there :)

Then back to the main riff again for the chorus.

Then another verse and chorus, and then the song
changes, and gets interesting.

This riff is played a few times:

|--------------|
|--------------|
|--------------|
|-2------------|
|-2-----9--8---|
|-0--0--7--6---|

Then this:
|----------------------------------------------------|
|----------------------------------------------------|
|----------------------------------------------------|
|--5-5-5-5-5-5-5-5-5-5/7-7-7-7-7-7-7-7-7-7-7-7-------|
|--5-5-5-5-5-5-5-5-5-5/7-7-7-7-7-7-7-7-7-7-7-7-------|
|--3-3-3-3-3-3-3-3-3-3/5-5-5-5-5-5-5-5-5-5-5-5-------|

Then repeat this a few times.
|----------------------------------------------------|
|----------------------------------------------------|
|--7--7-7-7-7-5--5-5-5-5-----------------------------|
|--7--7-7-7-7-5--5-5-5-5-----------------------------|
|--5--5-5-5-5-3--3-3-3-3-----------------------------|
|----------------------------------------------------|