a west of Scotland colloquialism for a cheap, fortified
wine, usually Buckfast Tonic
Wine. For some unknown reason, drinkers of "singin' ginger" want to befriend total strangers, not by attempting to have a conversation with them, but by singing incoherently. "Ginger" is another colloquialism used by the indigenous peoples of Glasgow. This refers to
soft (carbonated) drinks, such as Barr's Irn Bru, and fortified wines are perceived as "grown-up's ginger". Hence, over-enthusiastic indulgence of
alcohol causes the GINGER to make one want to sing.