This is a story of four people called Everybody, Somebody, Anybody and Nobody.
There was some important work that had to be done, and Everybody was sure that Somebody would do it.
Anybody could have done it, but Nobody did it. Somebody got angry because of this, since it was Everybody's job. Everybody thought Anybody could do it, but Nobody understood that Everybody wouldn't do it.
It ended with Everybody blaming Somebody as Nobody did what Anybody could have done.
source: Funtoosh.com
