Long marriages are not always like this!
A couple had been married for many years and had frequent arguments - the neighbours often heard them yelling at each other well into the night. He would shout "When I die I'm going to dig my way out of my grave and come back to haunt you for the rest of your life." In due course he died and one of the neighbours said to his wife "Aren't you afraid he'll dig his way out of his grave and come back and haunt you?" To which the wife replied "Let him dig - I had him buried upside down and I know he won't ask for directions!"