Every dead body that is not exterminated becomes one of them. It gets up and kills. The people it kills get up and kill. - Dawn of the Dead (1978)
Brown Out
Put some crap in a small plastic baggie. Hold your breath and expell any excess air out of the bag and tie it up. Next time you have a zombie encounter, blast one of these suckers in its face and put him in the dark. That will buy you a little time to plant a lead pipe between its hemispheres.