Not as a pejorative, but actually turning the picture upside-down. Have you ever tried it?
Some work better than others. Reflections in water can be good. In fact they were my first attempts. We’ve all done the picture of something reflected in still water to give the mirror-image effect. But if you crop the picture to only the reflection you get a wavy version of reality. This may not be ‘true’ but it does cause you to think about what you are looking at. It may actually be more true to reality, as well.
I don’t do this often, but I do like the effect. We had a session at the photo club where we each submitted a few pictures and all had a go at editing each others. We then compared and discussed the results. One picture I had a go at was a beach scene with a long sweeping area of water reflecting the sky and some distant people. I admit to cropping it to the reflection and inverting it. The reflection was fairly smooth, so it took a while for anyone to see what I had done. They didn’t like it, of course.
I also put one of my ‘reflective’ pictures into a competition. Again, the judge didn’t like it because they couldn’t see what it was. At least it was sharp, though.
Also, if you shoot more abstract pictures, they can be any way up that looks best.
Removing the normal visual clues leaves the shapes and tones, which is what attracted me in the first place.
So, enjoy. Just as there is no right way to take a photograph, there is no right way up. Take a look at the odd-looking shot here to see another example.