If you think about it, humans are technically a donut.
Your mouth, stomach, anus, and skin are all part of the same surface, in the shape of a donut.
However, one problem which arises from this way of thinking is “where does the anus end?” One might say that it stops at the outside of your hole… But does it really? By that logic, your mouth is part of your anus. French kissing would basically be wrapping each other’s prehensile anus tips as you exchange anus juice
Now let’s say it doesn’t end at the hole and is instead more of a gradient: your butt hole is 100% anus and as you get further away, it goes to 75%, 50%, 25%, then eventually, infinitely close to 0%. This means your anus reaches the outside and it’s surface extends as it envelopes your entire body. When you fist bump someone, you’re touching their anus. It’s basically a form of anus to anus fisting.
So what constitutes the exact definition of an anus?! We need answers!