The Coiled Green Snake

I bolted past the patio steps toward the corner of the garden fence, skidding to a stop right in front of a giant green coil. I paused, tilting my head to inspect the ribbed rubber ridges wrapped tight around a metal wheel. Was it sleeping? I crept closer and tapped the thick nozzle with my front paw. It clunked solidly against the frame, releasing a tiny, surprising hiss of cool air and a single fat drop of water straight onto my nose! I sneezed, shook my head, and gave the brass tip an approving pat.