Ontology's biggest clown Plato believed that there exists an immaterial Universe of `Forms', perfect transcendental templates of everyday objects such as a table, a chair,  a cat, one of Tony Blair's  bombs  and ideas/emotions, joy, action, etc. The objects and ideas in our material world are only  `shadows' of the forms. What I have done (just to please Parmenides)  is to modify the usual Plato set-up to create a cave with Plato, Socrates and Heidegger as the prisoners chained to a bench and being forced to watch real objects paraded before them. 

Now and again a burning brand from the fire would be applied to their testicles just to remind them that it was the real objects and the flames that actually existed  and not their conceptual fantasies about reificational  *Forms* and 'Universals* and other reificational pork-pies neatly shelved in some great emporium of dead  'ideas' in the sky.

The jailors turned prisoners'  own heads would be clamped in position as per Plato's personal instructions to the torturers, but instead of the shadows being projected on the wall in FRONT of the transcendentalist trio, a fire would be lit on the floor beneath it.  REAL objects would be paraded in front of it - between them and the fire,  so that the flames would cast shadows of the real objects on the wall BEHIND them instead of the front.    

The twist comes when Plato, Socrates and the unspeakable Nazi wretch Heidegger are released from their chains and the troilistic trio of transcendentalist turnip-heads are shown the shadows on the wall and told that these are the actual realities and the objects they had been looking at all those years were just the fantastical shadows.