The Economics Professor :

An economics professor at a local college made a statement that he had never failed a single student before, but had recently failed an entire class. That class had insisted that socialism worked well since no one would be poor and no one would be rich, thus providing a great equalizer.
The professor then said, "OK, we will have an experiment in this class on the Socialist plan".... All grades will be averaged and everyone will receive the same grade so no one will fail and no one will receive an A.... (substituting grades for dollars - something closer to home and more readily understood by all).