Federal law says that veteran's gravestones that are replaced for any reason are to be broken before they can be reused. I know that my Great-Uncle, who was sexton in the cemetery where my parents are buried, broke the stones and used them (name side down!) as surrounds for flowers, paving among the graves, and so on. They NEVER left the cemetery.

Then there's the one about the married couple who decided to give each other gravestones for their birthdays. Hers was first, and she was quiet when she found the epitaph read "Still Frigid." Some months later she got her own back with "Finally Stiff."