When your mom's egg got fertilised by your dad's sperm, the cell divided in half several times to end up with 32 cells. Then it began to cavitate, a hole began forming in one place that tunnelled it's way to the other side, making you a doughnut, basically. This first formation was your digestive tract, which is the tube you as a human are built around. That's when you became a triploblast developing 3 layers of cells.
Now for some species, the cavitation starts at what later becomes the mouth and goes to the place that ends up being the anus, but for others it goes the other way around. And all humans, are the other kind. So basically, when you were very young, you were nothing but a 32-celled triploblast with a butthole, and nothing else, and that butthole later tunnelled all the way to your mouth.
That is why, I feel no regret when saying: You're all assholes.
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