Anybody, Somebody, Everybody, Nobody

Here is a short story that I wish I had written. Just wanted to share.

Title: That's Not My Job!

This is a story about four people named Everybody, Somebody, Anybody and Nobody.

There was an important job to be done and Everybody was sure that Somebody would do it. Anybody could have done it, but Nobody did it. Somebody got angry about that, because it was Everybody's job. Everybody thought Anybody could do it, but Nobody realized that Everybody wouldn't do it.

It ended up that Everybody blamed Somebody when Nobody did what Anybody could have done

If I read this before you posted it here, I would definitely send it to you :)
This is so clever!!!

Thank you! Please do if you ever come across something similar to the above.

I still can’t get over the idea that Nobody did it. I mean Nobody is somebody who did it. Though that somebody is not the same Somebody in that story. I supposed each of those Nobody, Somebody, Everybody, Anybody are like variables in Math. In English, they are the subject, right?