Step one, check the litter box. Any cat raised indoors is usually litter trained by their mother, so there could be something about their litter box they aren't liking. (Too clean/dirty, too small, too open/closed, wrong smell, wrong litter, it's a robot that tries to eat them, etc.)

In my experience, a cat that changes it's behavior regarding pee and poop is trying to communicate something. I would pay extra attention and consider a visit to the vet.

It could also be that she just saw you watering plants and thought, why not. My cats usually go outside to poop or pee and just eventually use the sandbox. When they pee outside, they go for the sinks on the garden and when inside, they sometimes use the WC.

Well you pee into a pot with no plant in it.

Why are you so barbaric?

My asshole cat keeps shitting on the carpet. I even noticed intentionality to it, one night I let him out to hang out with me on the couch, and managed to stop him from pooping on the floor. I let him out the next morning for 5 minutes before I left for work, and he had held his shit all night to poop in the spot he picked the night before. He's my bathroom cat now, it's big enough that I can fit his litterbox, a small cat tree, toys, his feeder, and a seat in it. We chill together all night after work

At least they were nice enough to invite you into their office to discuss the matter.

On of my girls prefers to poop on the floor in front of the litter box. We don't know why, but it's like half the time. Asked the vet, but nothing's wrong with her, it's just her preference. Tried changing the litter, giving her a different box, different location. No difference. Half the time in the box, half the time in front of it. No idea. Cat is crazy.

You do have a cute little asshole tho.

Any indication that it’s just for funsies? Could be an issue with litter or a health concern if little bug is behaving differently in any other ways too.

Our indoor/outdoor hates the littler in the litterbox, so when we have a empty planter full of dirt he thinks that's his new litter box, and prefers to pee in dirt.

I tried using dirt for a while but I'm not buying bags of potting soil for him to piss in. I tried digging a hole but our soil has too many rocks, and by the time get passes away I'm going to have an unsightly pit in the yard and its not as sustainable as I thought. He goes inside so infrequently its easier to just keep doing the litter. If not I would consider buying a truck load of dirt, and dump the waste in the uneven part of my property and fill it in over the years.

Fun side fact I still don't know where he poops. I've never seen him poop only pee.

So, cats don't pee out of their asshole, you might be thinking of birds.

I bought these spikes that you put in your plants to stop that.