Years ago there used to be an ice lolly type thing called a Jubbly.It was in a waxy carton and was triangular in shape.You used to snip one corner of the carton and as it started to melt sort of drink it. A forerunner of the Slush Puppy.As kids we used love this and always called them "Lubbly Jubblies".
I won't dispute freshdaisy's explanation as to the 'Jubbly' origin, but the phrase 'Lovely Jubbly' was certainly popularised by the character Del Boy (David Jason) in the 1980s BBC sitcom 'Only Fools and Horses'.
Well GF if you can remember how much they cost you must be knocking on with me!!
I used to love those little bottles of orange you got from the milkman. Also Corona.I bet you remember that!