Hey-o! Picked this up by ear, it's really easy.
You should barre the intro, and the bit after the chorus.
What you do is take your pinky and put it on the fifth and tenth frets, b string, 
to get exactly the sound they do when they alternate G, G6 and C, C6.

Intro:

G G6 G6 G G6 

C C6 C x 3

and then

G G6 G G6 G G6 G

(palm mute power chords for verses)
G
Well you see her
C              G
Waddlin' around
C               G    C    
Waddlin' arooooooound
Em             D
Waddlin' around 
       G
Waddlin; around

G G#

A
Will she come back?
        D
I don't know
G     C
Oh baby
G      C                    G
Oh baby won't you be my girl

Repeat

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