We see those kinds of spoons in ice cream shops here, for eating multilayered desserts out of tall glasses.
Bloody 'ell; I haven't seen one of those in 50 years maybe.
"A knickerbocker glory is a layered ice cream sundae that is served in a large tall conical glass, and to be eaten with a distinctive long spoon, particularly in Great Britain and Ireland. The knickerbocker glory, first described in the 1920s, may contain ice cream, cream, fruit, and meringue. Layers of these different sweet tastes are alternated in a tall glass and topped with different kinds of syrup, nuts, whipped cream and often a cherry. The existence of these layers, which create red and white stripes, distinguishes the dish from a tall sundae and lends the Knickerbocker glory its name. In the United States this dish is more commonly known as a parfait, though knickerbocker glory is occasionally used."