like nailing jelly to a tree

like nailing jelly to a tree

(jargon, humour)Used to describe a task thought to beimpossible, especially one in which the difficulty arises frompoor specification or inherent slipperiness in the problemdomain. "Trying to display the "prettiest" arrangement ofnodes and arcs that diagrams a given graph is like nailingjelly to a tree, because nobody's sure what "prettiest" meansalgorithmically."