The only person who could ever miss with this gun would be the sucker with the bread to buy it. - 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.