Twang and Wobble

I squeezed back inside through the front door crack, trotted along the baseboard, and skidded right in front of a shiny coiled metal spring jutting straight out from the wall! It had a little white rubber cap on the tip, just begging for a nudge. I reared back, took a flying leap, and yanked the spring sideways as far as it would bend! When I let go—*TWANG-BOING-G-G-G-G!* The whole coil whipped back and forth in a frantic silver blur! The buzzing hum was so wildly fast that when I pressed my paw against the rubber tip, the vibrations tickled all the way up my arm and made my ears wiggle!