This is from Good Charlotte's second cd- The Young And Hopeless. Released on Epic Records. The other versions are a bit inaccurate I think. I'm 
positive this is correct.

Ok guys this is a pretty simple song really but fun to play along with on the cd. The strumming is kind of ska-style. . . listen to the song to figure it 
out. Use both upstrokes and downstrokes very very fast. There are two possible ways for the chords so i will list both. 


Music box intro plays a few times then. . .

E -------------------------------------------------------------------
B -------------------------------------------------------------------
G -------------------------444444444-------------------------------
D --66666666--222222222--444444444--44444444---------------------
A --66666666--222222222--222222222--44444444----------------------
E --44444444--000000000--------------22222222----------------------

Or it might be

E -------------------------------------------------------------------
B -------------------------------------------------------------------
G -------------------------444444444--66666666---------------------
D --66666666--222222222--444444444--66666666---------------------
A --66666666--222222222--222222222--44444444----------------------
E --44444444--000000000---------------------------------------------

After the chord intro plays a few times then comes the "solo" part.

E --------------------------------------------------------------------------
B --14-14-14-14-14-14-14-14-12-12-12-12-12-12-12-12----------------------
G --------------------------------------------------------------------------
D -------------------------------------------------------------------------- 
A --------------------------------------------------------------------------
E --------------------------------------------------------------------------

E --------------------------------------------------------------------------
B -11-11-11-11-11-11-11-11-10-10-10-10-10-10-10-10-----------------------
G -------------------------------------------------------------------------- 
D --------------------------------------------------------------------------
A --------------------------------------------------------------------------
E --------------------------------------------------------------------------

repeat that part as necessary.

Please send any comments or corrections, although im pretty sure i'm correct here. 
I know i haven't tabbed everything out how many times its played but its a short song so you just have to listen to it.