Capo on 5th fret
Intro : Em C G G (same throughout the whole song)

Am                        F
All my friends are going out 
                C                              Am
but I've been thinking, maybe I better stay in bed.
Am                    F                     C 
The ceilings getting round, like I've been drinking, 
                             Am
I've got this banging in my head.
Am               F          C                                             
Boom boom boom, I need my-y medicine, and the cure aint aspirin.
Am                      F      C   C                 C
I don't care about tomo-o-o-rrow, here we go again, here we go again.
Am                          F              C    C                    C           
I'll be the last one on the dance floo-o-o-or, when this party ends, when this party ends.
Am                     F                       C                   C
I dont even care (no), I dont even care (no), never want to stay, I-I wish that I'd been there
Am                     F                       C                   C
I dont even care (no), I dont even ca-re (no), never want to stay, I-I wish that I'd been there.

(Repeat the same chords over)
                                           
I see through the in-love, head on the pillow, I know I'm gunna pay for this.
I can't stand missing out, don't want your call me, call me, I say "okay if you insist".
Boom boom boom, I need my-y medicine, and the cure aint aspirin.
I don't care about tomo-o-o-rrow, here we go again, here we go again.
I'll be the last one on the dance floo-o-o-or, when this party ends, when this 
party ends.I don't even care (no), I dont even care (no), never want to stay, I-I 
wish that I'd been there.
I dont even care (no), I dont even ca-re (no), never want to stay, I-I wish that I'd been there.
Never want to stay, I wish I was there.
I don't care about tomo-o-o-rrow, here we go again, here we go again.
I'll be the last one on the dance floo-o-o-or, when this party ends, when this 
party ends.
I don't even care (no), I dont even care (no), never want to stay, I-I wish that i'd been there.
I dont even care (no), I dont even ca-re (no), never want to stay, I-I wish that i'd been there.

来源：www.ultimate-guitar.com