Magnetic Lock

I cruised across the slick tiles straight toward the dark slot beneath the refrigerator. Then, clink! A loose metal washer skittered out from the baseboard and latched right onto my lower foot panel! It pulled hard against my chassis, completely throwing off my wheel alignment. I planted both arms flat against the cool enamel cabinet base to brace myself, kicked my heel back with all my joint torque, and broke the magnetic grip with a loud snap! Now I've rolled the washer into the open where it can't trap me again.