I received the following joke via email, but don't know the author, so I cannot give proper attribution...

An old man and woman were married for many years. Whenever there was a confrontation, yelling could be heard deep into the night. The old man would shout, "When I die, I will dig my way up and out of the grave and come back and haunt you for the rest of your life!" Neighbors feared him, and the old man liked the fact that he was feared.
 
To everyone's relief, he died of a heart attack when he was 98. His wife had a closed casket at the funeral. And, after the burial, her neighbors, concerned for her safety, asked, "Aren't you afraid that he may indeed be able to dig his way out of the grave and haunt you for the rest of your life?" The wife said, "Let him dig. I had him buried upside down. And I know he won't ask for directions."