Eiii, the string was a grenade pin.
He's another I made up:
Two ghost are talking:
Ghost 1: "How did you die"?
Ghost 2: "I was going bunjee jumping by myself; but I'm the type of guy that is very cautious and can point out any mistakes. So, I set up the bungee rope and checked it for any flaws, and had a back-cable in case it didn't work. So I went over everything and tested it with a sand bad; it worked fine. So, last step, I put it around my neck and jumped!"