Funny, does anyone know the history of any of the markers? I'm just curious why this is global thing really.

The one from Míšov, Czech Republic is tribute to the running joke of nonexistent genius Jara Cimmrman

https://en.wikipedia.org/wiki/J%C3%A1ra_Cimrman

The bust (if you even can call it that...) pictured in the article is terrifying!

The plaque is identical in two of the photos (one from Ireland, one from Luxembourg), and the wording is identical in those two plus a third (from Western Australia). That makes me curious.

You don't think this is just a joke that multiple people thought of independently?

Some of them might be in reaction to a local event, or even a worldwide event that had no local impact. But I think they're mostly just jokes.

Was it in a Monty python sketch or something?