Tabbed by:Rob Newhook
Tuning:standard
Capo 7th Fret

Chords you will need

Em Shape 022000
G shape  320033
D Shape  xx0232
A shape  x02220
note: these chords are actually Bm, D, A, E respectively due to the capo

The d's and u's above indicate whether or not its an upstroke or downstroke
the letters above idicate which chord shape your using

During chorus just strum chords 1 time per measure and come back to main riff after.
Listen to the song for reference.

   Em                               G
           d    d    u    u    d    d    d    u    u    d
e|---------0----0----0----0--------------3----3----3----3----------------------|
B|---------0----0----0----0--------------3----3----3----3----------------------|
G|---------0----0----0----0--------------0----0----0----0----------------------|
D|---------2----2----2----2--------------0----0----0----0----------------------|
A|---------2----2----2----2--------------2----2----2----2----------------------|
E|----0----0----0----0----0----2----3----3----3----3----3----------------------|


      d    d    u    u    d    u    d    d    u    d    u    d    u
e|---------0----0h2--0----0----0---------x----x----x----x----x----x---------|
B|---------3----3----3----3----3---------2----2----2h3--2----2----2---------|
G|---------2----2----2----2----2---------2----2----2----2----2----2---------|
D|----0----0----0----0----0----0---------2----2----2----2----2----2---------|
A|----------------------------------0----0----0----0----0----0----0---------|
E|--------------------------------------------------------------------------|


Robert's got a quick hand.
 He'll look around the room,
he won't tell you his plan.
 He's got a rolled cigarette,
hanging out his mouth
he's a cowboy kid.

Yeah he found a six-shooter gun.
 In his dad's closet hidden in a box of fun things,
and I don't even know what.
 But he's coming for you,
yeah he's coming for you.

[Chorus x1:]
 All the other kids with the pumped up kicks
You'd better run, better run, outrun my gun
 All the other kids with the pumped up kicks
You'd better run, better run, faster than my bullet
Faster than my bullet yeah

Daddy works a long day.
 He'll be coming home late,
yeah he's coming home late.
 And he's bringing me a surprise.
 'Cause dinner's in the kitchen and it's packed in ice.

I've waited for a long time.
 Yeah the sleight of my hand
is now a quick pull trigger,
 I reason with my cigarette,
 And say your hair's on fire,
you must have lost your wits, yeah.

[Chorus x2:]
 All the other kids with the pumped up kicks
You'd better run, better run, outrun my gun
 All the other kids with the pumped up kicks
You'd better run, better run, faster than my bullet

[Whistling]

[Chorus x3:]
 All the other kids with the pumped up kicks
You'd better run, better run, outrun my gun
 All the other kids with the pumped up kicks
You'd better run, better run, faster than my bullet

Thats all i got for now.  I will update later with more exact intructions on how he's 
changed the song.
Hope this helps and thanks to Lizzie for the request. :)