I'm with LJC on this. The song does not translate into standard english at all well.
Dozie in scotland used to mean stupid, probably still does. So the pipie is being stupid and acting peculiarly. He surely is for he is not coming to the piss-up tonight.
I always understood the bricht chaumers to refer to the flames billowing out of the still burning bombed out buildings, an eerie sight under a strange grey sky
Missing from the glossary is an entry for ha', as in sheiling an ha'. Farm cottages and the farm house
Any publication that confuses swaddies with bastards is very suspect