Chalk Rock

I stared in amazement as a seemingly normal rock was used to write on the ground as if it were chalk. "Chalk rock," the kid explained to me.

Later that day I had converted my younger brother to the wonders of "chalk rock," and we began searching for these hidden miracles of nature. A short search later we discovered rocks that left white marks in the driveway. Knowing that chalk can wash off, I proceeded to "chalk up" the family car, my brother following suit. My kindergarten mind had it all figured out.

Needless to say, my father was not impressed.