I saw a couple versions on here and saw a few differences from how i play so i 
though i would post it, hope you like it. 

    *Also, you might want to play around with the srum pattern, and little smacks 
or mutes, to give the chords a more reggae feel!:)

CAPO:4

 G                  D            Em/C
Today I don't feel like doing anything
G             D        Em/C
I just wanna lay in my bed
 G                       D                Em             C
Don't feel like picking up my phone, so leave a message at the tone
         G                D           Em/C
'Cause today I swear I'm not doing anything

Same G D Em C pattern for the next 2 verses.

Bridge: 
    C   
Oh Yes i said it,
D
  i said it,
 G                  D
i said it cause' i can

  Later on in the song!:)
        C                  Em
No, I ain't gonna comb my hair
       C                  Em
'Cause I ain't going anywhere
G                D               Em
No, no, no, no, no, no, no, no, no
            G                    D
I'll just strut in my birthday suit
            Em            C
And let everything hang loose
 G                        D
Yeah, yeah, yeah, yeah, yeah
                         Em
Yeah, yeah, yeah, yeah, yeah

Just repeat various paterns above for their parts and your GOLDEN!!!:)