I listened to the song, watched how he played it live and i'm sure this is right.
Read the bottom of the page for Fig. 1 and the tab for the Cadd9 parts.

G     [320033]
Cadd9 [X32033]
Am    [X02210]
C     [X32010]
D     [XX0232]

Intro

G Cadd9 G Cadd9 G Cadd9 G

           GLiquor (320003@1)and whores

Liquor and whores
               AmCigarettes (x02210@1)and dope and mustard and bologna and
           G (320003@1)   Cadd9 (x32030@1) GLiquor (320003@1)and whores

           GWhen (320003@1)I was down
                AmDrinkin' (x02210@1)at the Legion
        C (x32010@1)          DI (xx0232@1)met a girl she was nice
                   G (320003@1)     Cadd9 (x32030@1) GShe (320003@1)was pretty and pleasing

              GShe (320003@1)said "Hey boy
                  AmWe (x02210@1)should do some marrying"
       C (x32010@1)                DI (xx0232@1)said sure but before we do
                       G[Fig. (320003@1)1]
There's something that you should know


I like
           GLiquor (320003@1)and whores

Liquor and whores
               AmCigarettes (x02210@1)and dope and mustard and bologna
           G (320003@1)   Cadd9 (x32030@1) GLiquor (320003@1)and whores


             GAnd (320003@1)then one night
            AmDown (x02210@1)at the Legion
           C (x32010@1)                DShe (xx0232@1)walked in, I was drunk on gin
                 G (320003@1)         Cadd9 (x32030@1) GDancing (320003@1)with the lady friends



              GShe (320003@1)said "Hey boy,
                   AmYou (x02210@1)better fly the fuck home"
        C (x32010@1)                   DI (xx0232@1)said "No, cause of 5 little words
                 G (320003@1)         Cadd9 (x32030@1) GI (320003@1)coulda swore I said to you"


I like
           GLiquor (320003@1)and whores

Liquor and whores
               AmCigarettes (x02210@1)and dope and mustard and bologna
           G (320003@1)    Cadd9 (x32030@1) GLiquor (320003@1)and whores


I like
           GLiquor (320003@1)and whores

Liquor and whores
               AmCigarettes (x02210@1)and dope and mustard and bologna
           G (320003@1)   Cadd9 (x32030@1) GLiquor (320003@1)and whores



Fig. 1

[---3-------3----3----3--------3----3-------3----3---]
[---3-------3----3----3--------3----3-------3----3---]
[---0-------0----0----0--------0----0-------0----0---]
[---0-------0----0----0-h-2----2----0-h-2---2----0---]
[---2-------2----2----X--------X----X-------X----2---]
[---3-------3----3----3--------3----3-------3----3---]
    d (xx0231@1)     d (xx0231@1)  u    d (xx0231@1)      u    d (xx0231@1)     u    d (xx0231@1)
Play this every time Cadd9 comes up.

[----3--------3----3-----3---]
[----3--------3----3-----3---]
[----0--------0----0-----0---]
[----0-h-2----2----2-----2---]
[----3--------3----3-----3---]
[----------------------------]
     d (xx0231@1)      u    d (xx0231@1)   u