During Chinese Warring States period, a man named Chuang-tzu had a dream that he was a butterfly flying from flower to flower, feeling free, blown about by the breeze.
Upon waking, he wondered, “Am I a man, dreaming I am a butterfly; or a butterfly, dreaming I am a man?”
Dreams often do not mean anything and when they do, we usually cannot immediately discern the meaning.
One of the most creative analogies on dreaming was "audiovisual representation of a virtual machine's garbage collector's run", by a programmer collegue.