Sparring with the Stamp

I marched up to the coffee table and spotted a hefty red rubber stamp standing tall like a mechanical rival! It had a spring-loaded black casing with a round knob right on top. I didn't hesitate for a second—I dropped into a deep horse stance, threw both palms against the upper handle, and drove all my weight downward! The internal spring resisted with a stiff groan before suddenly yielding with a loud, mechanical THUMP! Red ink stamped crisp and clean onto a scrap note paper beneath. Pushing against that sudden spring-snap gave my arms an awesome workout!