First chords post but I play it all the time its perfect:
         C#m  Eb  Bb   Ab
I got a hangover,wo-oh!
I've been drinking too much for sure
I got a hangover,wo-oh!
I got an empty cup,pure me some more

Rest is the same and there's a little bridge:

e|--3-8-6-3-1-----1-3--------------------------------------------------------|
B|------------4-4-----1------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|---------------------------------------------------------------------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|

Easier to play the bridge with capo on first fret,I use it for the whole song too =]

Enjoy!!