I just read an amusing Onion story about Rafael Nadal and his predilection for clay. Something about it made me laugh, perhaps just because it reminded me of the classic mid-80s SNL Adobe commercial. That jingle has been in my head since about 7th grade (from a commercial special that aired sometime around then), and every time I drive by an Adobe In & Out restaurant it plays itself again.

To learn more about clay, check out the Wikipedia. Did you know that clay was used as the very first writing medium?