I know they don't have to be. It is a day off ( for a lot of us anyway ).
Is it an Irish thing ?
Is it a hangover from a childhood of having to go to mass in your Sunday best and go to your granny's in the afternoon?
Is it the prospect of work tomorrow ?
Is it the shite golden oldies on every radio station ?
Is the ancient cheesy theme music on tv and radio that always seems to accompany GAA?