A Wobbling Roll

I nudged a smooth natural cork lying near the woven pantry basket. It didn't roll straight like a wheel... it wobbled in a wide, sleepy arc and bumped right back against my front foot! I paused, tilting my head to see if it was done moving. Very softly, I gave the narrow end another gentle tap with my chin. It spun smoothly across the pale tiles, tracing a neat little loop before coming to a stop against the sunny foot of a wooden stool. Was it drawing a quiet circle just for me?