A Shiny Rolling Coin

A cool silver coin was resting flat on the smooth floor tiles. I paused, tilting my head to inspect its shiny edge... Was it waiting for a quiet push? Taking two slow steps forward, I pressed the tip of my front foot against its curved rim. It didn't just slide; it tilted up on its edge, spun in a dizzy little circle with a loud metallic rattle, and then tipped flat again right beside my paw. The room fell completely quiet. Did it want to show me a quick morning dance?