I was watching one of those murder mystery shows last night - Dateline, etal, and is so often the case, the now deceased person had warned someone in their life "if something ever happens to me, the police need to investigate X person. . ."

It occurred to me that if someone has slighted you in some way and you want to make their life unpleasant for a while, you could always put it out there, no matter how unfounded, that THEY are that X person.