Best. joke. ever.

Emo Phillips:

"I argued with my father the other day that Plato was the godfather of philosophy. He took the opposing viewpoint that I should wax the kitchen floor. I responded by saying that's impossible, because the floor doesn't exist... at least not in the permanent sense that the concept "floor" does. He asked, "do you believe in the concept of your skull?" I said yes, and he surprised me by juxtaposing the two concepts."