NNNNNN-Necrothread!
One that looks to be a single panel from yunners
http://yunners.deviantart.com/art/Back-Pains-140047107
An awesome sequence by the constantly awesome Mako. I'm not sure if it's been posted before, but if the shoe fits, yadda yadda yadda.
http://siobahnsienkiewicz.deviantart...c-01-135249252