Brit. informal used to express delight or approbation; excellent
〈英, 非正式〉［用以表示高兴或满意］好极了：
fish and chips and a few beers on the way back from a match - lovely jubbly!
在看完比赛回去的路上来点儿鱼和炸土豆条, 再来几杯啤酒——太棒了！
ORIGIN: from lubbly Jubbly, a 1950s advertising slogan for Jubbly, an orange-flavoured soft drink; adopted by comedy writer John Sullivan in his BBC television series Only Fools & Horses.