I've seen a lot of tabs of this song and personally, I think they're blammin' Liam Lynch a bit. I mean, sure it's simple but it's not two power chords simple. Here's what I think:

NOTE: A lot of Bass and some Palm Muting makes this song sound better for some reason. Maybe I'm a suck tabber, maybe it's just finding a good compromise. Ack, whatever.

INTRO AND VERSE RIFF
====================

"Whatever."

E|------------|------------|------------|
B|------------|------------|------------|
G|------------|------------|------------|
D|0-66--88888-|0-66--88888-|0-66--8-----|
A|0-66--88888-|0-66--88888-|0-66--8-----|
E|0-44--66666-|0-44--66666-|0-44--6-----|

VERSE ONE - PLAY RIFF AFTER TALKING
-----------------------------------

"I went down to the beak and saw Kiki, she was all like 'Uh!' and I'm like 'Whatever!'

RIFF

"Then this chick comes up to me and shes all like 'Aren't you that dude?' and I'm like 'Whatever!'

RIFF

"So later, I'm...I'm at the pool hall and this girl comes up to me and shes all like 'Aw...' and I'm like 'Whatever!'"

RIFF

CHORUS - IT DOESN'T GET ANY BETTER THAN THIS   ;)
-------------------------------------------------

"Cause this is MY UNITED STATES OF WHATEVER!"

E|------------|------------|------------|
B|------------|------------|------------|
G|---5555-----|------------|------------|
D|0665555-5555|0-66--88888-|0-66--88888-|
A|0663333-5555|0-66--88888-|0-66--88888-|
E|044-----3333|0-44--66666-|0-44--66666-|

"And this is MY UNITED STATES OF WHATEVER!"

E|------------|------------|------------|
B|------------|------------|------------|
G|---5555-----|------------|------------|
D|0665555-5555|0-66--88888-|0-66--88888-|
A|0663333-5555|0-66--88888-|0-66--88888-|
E|044-----3333|0-44--66666-|0-44--66666-|

"~And this is MY UNITED STATES OF WHATEVER!~"

E|------------|------------|------------|------------|
B|------------|------------|------------|------------|
G|---5555-----|------------|------------|------------|
D|0665555-5555|0-66--88888-|0-66--88888-|0-66--8-----|
A|0663333-5555|0-66--88888-|0-66--88888-|0-66--8-----|
E|044-----3333|0-44--66666-|0-44--66666-|0-44--6-----|

VERSE TWO - JUST LIKE VERSE ONE (Whatever...)
---------------------------------------------

"And then it's 3AM I'm on the corner wearin' my leather, this dude comes up and he's like 'Hey Punk!' I'm like 'Yeah Whatever!'"

RIFF

"Then I'm throwin' dice in the alley, Officer Leyroy comes up and he's like 'Hey I thought I told you_' and I'm like 'Yeah Whatever!'"

RIFF with an extra bit like this: 

E|------------|------------|------------|------------|------------|
B|------------|------------|------------|------------|------------|
G|------------|------------|------------|------------|------------|
D|0-66--88888-|0-66--88888-|0-66--88888-|0-66--88888-|0-66--8-----|
A|0-66--88888-|0-66--88888-|0-66--88888-|0-66--88888-|0-66--8-----|
E|0-44--66666-|0-44--66666-|0-66--88888-|0-66--88888-|0-44--6-----|

"And then up comes Zathon I'm like 'Yo Zathon Wazzup?' He's like 'Dawg' I'm like 'That's Cool.'

CHORUS AGAIN!!!
---------------

"Cause this is MY UNITED STATES OF WHATEVER!"

E|------------|------------|------------|
B|------------|------------|------------|
G|---5555-----|------------|------------|
D|0665555-5555|0-66--88888-|0-66--88888-|
A|0663333-5555|0-66--88888-|0-66--88888-|
E|044-----3333|0-44--66666-|0-44--66666-|

"~And this is MY UNITED STATES OF WHATEVER!~"

E|------------|------------|------------|------------|
B|------------|------------|------------|------------|
G|---5555-----|------------|------------|------------|
D|0665555-5555|0-66--88888-|0-66--88888-|0-66--8-----|
A|0663333-5555|0-66--88888-|0-66--88888-|0-66--8-----|
E|044-----3333|0-44--66666-|0-44--66666-|0-44--6-----|

=========================E N D========================

I dunno how the heck to do the farty style thing at the end. Not that you'd want to know. Whatever.
This is my first tab. Criticise it if you have to, it's not like it's my sacred writing or anythin' so I don't give a ***. Whatever.