You must kill the person below you, but here's the catch. You must do it creatively.
Ready....GO!
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I will stuff you into a box, enough space for you to fit, and put said box that you are in, on a nail. That nail is super glued onto a hydraulic piston. When I push the button the piston breaks through the box, and you are impaled by the nail. You just died by a nail. How sad and pathetic.