Instructions
Run Sims 2 on your PC. Enter your neighborhood and select the desired family.
Press "Control," "Shift," and "C" simultaneously to bring up the command window.
Type "boolprop testingcheatsenabled true" without the quotation marks and press "Enter."
Shift-click on an adult Sim to bring up the interaction menu. Select "More," then "Spawn" and then "Tombstone of L and D." The tombstone will appear.
Bring up the command window again and type "boolprop testingcheatsenabled false" to disable the original cheat.