C.e. Murphy said this quote
“ I suppose I knew on an intellectual level that graves weren't especially made for getting out of. I mean, you start with a hermetically sealed casket and then you dump six feet of dirt on top of it. Over time the earth gets compacted, which can't make it easy to dig through. So even if you're a very angry and determined zombie, you've kind of got your work cut out for you just escaping from the grave.Which was, I suppose, why we got hit with an initial wave of zombie bugs, birds and rodents. I bet some people would say if you've never picked undead mosquitoes out of your teeth, you've never lived. Under that definition, I'd be just as happy to have not lived, thanks. ”