Everybody, Somebody, Anybody, and Nobody

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 actually Nobody asked Anybody.