My favourite 'hangover' song:-

Instant Coffee Blues
By Guy Clark

He washed all the road dirt from his face and from his neck
And sat down at her table and she picked up his check
And she took him home for reasons that she did not understand
And him he had the answers but he did not show his hand
For him he knew the taste of this wine very well
It all goes down so easy but the next day is hell

Morning
"Man was I drunk", she whispered in the shower
While he lay there and smoked his way there through the final hour
And she felt wholly empty like she felt it every time
And he was feelin' just the same 'cept he's trying to make it rhyme
Time was of the essence so they both did their best
To meet up in the kitchen feeling fully dressed

She just had to go to work and he just had to go
And she knew where and he knew how to blow it off and so
They shot the breeze quite cavalier to the boilin' of the pot
And sang the Instant Coffee Blues and never fired a shot
And him he hit the driveway with his feelin's in a case
And her she hit the stoplight and touched up her face

So you tell him the difference between caring and not
And that it's all done with mirrors lest they forgot
I said it's all done with mirrors of which they have none
To blend the Instant Coffee Blues into the morning sun