What is communism? I really don’t get communist jokes

A theory or system of social organization in which all property is owned by the community and each person contributes and receives according to their ability and needs.

“a political theory derived from Karl Marx, advocating class war and leading to a society in which all property is publicly owned and each person works and is paid according to their abilities and needs.” “Communism is a political and economic system that seeks to create a classless society in which the major means of production, such as mines and factories, are owned and controlled by the public.” Hope that helps!