By skyforbes 
I'm seeing this meme going around and people have all kinds of weird theories on what causes this wear pattern.
Little do they know that I hold the secret. But I don't want to admit in real life how weird I was. After seeing this meme I realized that apparently I am not the only weird person, so it's probably safe to let Reddit know the answer.
So here it is: When I was a kid, for some reason I hated having my feet and legs dangling off the toilet.
So I would bring my knees up to my chest and hold them with my arms. But that was too much effort. So then I just wedged the heels of my feet in that particular spot of the toilet seat. Then I did that almost every time I used the toilet for years. Over time, the finish wore away, leaving that particular wear pattern.
That's it. That's the secret. Thank you all for coming to my presentation!