There is a cheat for it. what you need to do is enter the boolprop cheat and then hold shift and click on your Sim. there will be an option that says, "spawn" click on it and look for death creator or something like that. it is there so have fun!! :-)
P.S. there are options for killing your Sim differently with the tombstone of L&D. (you get the tombstone that same way as the death creator.. it will be one of the options under "spawn").
I see naked people!!! (Its my sickth sense)
[color=red][center](Dont think i should put a picture here.)[/color]
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