The Dong with the Luminous Nose, and the Pobble who has no Toes are characters from the mysterious, twilit world of Edward Lear's imagination. Euston station, point of departure for trains from London to Manchester. Each year about 25 nations enter this contest which is shown live on all the countries simultaneuosly. Families used to gather and score the songs and argue about the result. But despite that, it's still prime time viewing.
Voting is done sequentially with each country phoning in their choice of first, second, third etc.
So if, as a contestant, a country does not finish in anybody else's top eight, then it's possible to get a grand total of zero points. For many, many years this never happened. Finally in 1980something a truly appaling punk entry from Norway achieved nul-points.