Never thought I'd have this conversation but here we are lol. Folded a few times, and lightly wet. If you get it soaking you're gonna get a finger where you don't want it, as well as those.

I can't see how this is cleaner, less effort or even as fun (for some of us) as an endless spray of water on your pucker, sorry.

Should we also shower with a lightly wet piece of TP?

Well, usually you'd shower with a rag or scrubbing utensil of some type, or at minimum hand scrubbing with soap.

Think of using a bum gun like taking a shower over the toilet.

There is no reason why you can't use all the same fun toys over a toilet as you do in the shower, while holding what amounts to a smaller shower head. Hands, soap, towels and even sponges!

The lack of mental creativity here is very entertaining!