Definition
According to one's nature; as expected.
How People Actually Use It
Don't quote this in therapy you filthy shinnie.
"you know how Shinji Ikari once said: "Everything is simply a shape, a form, an identifier to let others recognize me as me! But then, what am I? Is this me? My true self? My fake self? What is it that I am? Nobody understands me!" yeah, I relate to that."
Source: Urban Dictionary