This is what I think are the right chords if not really close, be sure to watch 
his video for strumming and picking patterns. For funny animations and random 
videos, check out my youtube channel at http://www.youtube.com/derailedtv

Intro (play 2 times):
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-----0--0-----3---|
-3-3------1-1-----|

Chorus:
F          G                        C
I'll never get naked in your shower
F         G                         C
I promise I'll always wear my cloths
F      G               C                          F
I only get naked in my shower behind closed doors
F              G                 C                         
but I'll never get naked in yours

Verse (repeat the tabs given for the intro):
As long as I'm a guest in your home
I declare this an anti-awkward zone
and there ain't no need for privacy
there ain't no private parts you see
this way we don't have to be alone
huhh

Chorus (play twice):
F          G                        C
I'll never get naked in your shower
F         G                         C
I promise I'll always wear my cloths
F      G               C                          F
I only get naked in my shower behind closed doors
F              G                 C                         
but I'll never get naked in yours

Thanks for the support, don't be afraid to contact me about any errors you may find :)