Incidentally, 'down the glen' is old-fashioned but still current slang in Ireland for 'rightly fucked', but this usage comes from a different song, with the line "Down the glen rode Sarsfield's men, and they wore their jackets green". In fact 'jackets green' is also shorthand for the same usage.

For instance:
"How are the Waterford team doing in the final?"
"Jackets green."
"Oh dear."