Maximum Velocity Boing

I flicked the coiled metal post sticking straight out of the baseboard, and the entire corridor instantly buzzed. Boiiing! The whole vibration rattled right through my arm into my chest like an electric hum. Naturally, that called for full power. I hauled the tip backward until the coils stretched wide open and released. Twang! It whipped back and forth in a frantic silver blur, kicking up a tiny breeze right in my face. When the blur finally settled down, I planted both feet firmly against the rubber cap and leaned all my weight into it to see if it could launch me across the polished floorboards. It only bounced me back an inch, but that just means I need a heavier windup next time!