There's no way in hell I'm watching this movie.. That is quite literally my worst nightmare. Ever since I saw that episode of Alfred Hitchcock Presents titled "Final Escape" when I was a kid.

In the episode, a prison inmate offers to help a half blind grave digger pay for eye surgery if he'll allow him to get into a coffin with another dead inmate so that he can be buried and dug up later. Of course he gets into the coffin, waits underground - but it's taking too long. So he turns over to look at the dead guy only to realize that it's the grave digger. OMG no.