Whose Job Is It?

This is a story about four people named Everybody, Somebody, Anybody,
and Nobody. There was an important job to be done, and Everybody was
asked to do it. Everybody was sure 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.