Honestly since 80% of my worldbuilding revolves around one specific country, and 19% of my worldbuilding revolves around the countries immediately neighboring that country, I kinda phoned in the remaining 1%. So you can see in some places on the world map that a number of borders and coastlines are pretty clearly based on ones from the real world, but flipped or turned or stretched or squished or otherwise altered. Most of these countries don't even have names, and I could only write 7~10 words about them — namely whether they were ever part of the Big Evil Empire, and if they ever were, approximately when they gained their independence.

This worldbuilding myopia will probably change if I ever go ahead and write what I've tentatively called the "Bereshith canon", but I don't plan on doing that any time soon.

But yeah, aside from that, the laziest thing I've done in my worldbuilding is probably that I made my conlang canonically a conlang in-universe. I think I ended up doing some interesting things with this idea, and because the language has now a sizable number of native speakers and has evolved naturally for several centuries, it's not like I'm completely free to just make the language up without any regard for realism... But in any case, yeah, I am pretty free to forget about realism.

I actually remember watching K Klein's video "So I Invented a Language..." when I was well into my own worldbuilding project, and then they mentioned their own conlang being a conlang in universe, and I just thought, "You too, huh?"

I once posted in an online forum asking for ideas for my campaign.