i believe i've seen the extent of what man can do with a wide anal circumference.
i say that because I refuse to accept that it could get worse.
Not get worse? I think thats something you should ask the dark web that since even I've seen far more at what you seen, I still can't comprehend how deep and scary one's imagination is. And what I say about vore is just the basic category and there are still the sub-categories and those having sub-categories as well. A human mind is fcked up but it doesn't limit their imagination as it still expands from one layer upon another.
I think I read one manga about a preg woman and some man not only fcking her but also....I'm not gonna continue to expand about that since i might talk even deeper at what I've seen.
Just a note of advice, limit is not an answer but a question and the answer will always be No in the dark web. You just lack enough imagination and thats only the good thing to know. Never dig too deep to what you know or you might end up asking why doesn't humanity get extinct yet.