I, uh, haven't yet. 😅

I'm not sure, what it's called in English. In German, we have the sexy term "Lendenwirbelsäulenblockade" for it.
The internet tells me that it might be a "lumbar vertebral subluxation" in English, although that Wikipedia article sounds a lot more like quackery than my German impression of it. It might also be a "lumbar blockage"...?

But basically, one of the many joints in the spine for some reason loses its ability to move. And often times, the solution is to apply a bit of force, to get it unstuck. You *should* talk to a professional about this, or at least a chiropractor, because force won't always be the correct solution.
But yeah, if you ignore those safety instructions, what you can do, is to slowly move your back into the position that the right cat is in (while on your knees and hands). Then slowly arch your back into the other direction. At some point, you might hear a pop, as the joint regains its ability to move and then that's that.

What's also fun is that you often still encounter these boundaries today. Many of those splotches are now administrative districts: https://en.wikipedia.org/wiki/Districts_of_Germany

And up until 2023, you often couldn't travel by bus across multiple splotches without getting multiple tickets from the different regional providers. It was awful.

No idea, if that's a regional thing that "Hochdeutsch" primarily means Southern German to you, but here in South Germany, I doubt anyone would be aware of your definition and everyone understands "Hochdeutsch" to mean "Standard High German".

My dictionary does list the Southern German meaning, but it's listed as the secondary meaning.

I have actually managed to unfuck my back at some point, by doing a motion like the cat on the right. 🥴

Video auf PeerTube: https://peertube.heise.de/w/pFZPq7EbtmisCeC3ubR72r

The photo looks like an art piece, too...

Last year, my doctor prescribed vitamins for me to inject into my tummy fat with a syringe. And let's just say, I was glad to be doing that in privacy, because I most certainly felt like a drug addict.

Even the usual movie depiction of drug addicts being really messy and prodding or cutting themselves, I mirrored quite well, not from withdrawal shaking, but because I'm just really not practiced with syringes. 🫠

It's right-wing trolling that it's specifically non-binary. It's just iconography they use throughout Firefox, when displaying error messages or the like.

Mozilla didn't bring it up. The story is made up by right-wing trolls.

This story is made up by right-wing trolls.

The dino represents Mozilla, not Firefox itself. And yes, for a while, Mozilla didn't have the dino in its official branding, but it's now back in there. The flag is a dino head. As per usual, significantly more drama was made about them "removing" the dino than it was worth.

Apparently, it's right-wing trolls who made up this non-binary thing. So, you are correct, but it came from the other side of the culture war.