not real or true; imaginary or fabricated.
a broad piece of metal or another suitable material, held by straps or a handle attached on one side, used as a protection against blows or missiles.
A simple illustration of a fictitious signpost, presumably at a crossroads. All paths diverge eventually. A choice to be made at a crossroads. Which path to take? Will you go this way, or that way? Safe journey to you traveller.
Whilst it's true that you can't polish a turd, you can certainly roll it in glitter. Stick a flag in it too if you like. Making the best from a bad lot can be heavy going sometimes. A poo emoji rolled in glitter will help you on your way.