I have once... I was in jail and someone was making fun of my autism, and a few minutes later... that same person got punched in the face by another inmate who was complaining about his bad "body odor". It was kind of funny... but it happened. There's been a few other situations where I've seen people who did me wrong meet with misfortune, but there was also quite a few times when people did me wrong and I never seen anything bad happen to them at all (although I could of been in the wrong myself, maybe it was a lesson to be learned), but I do have to give my guardian Demon (if I have one, pretty sure I do) some credit, because he/she got me out of quite a few bad situations in my life that could of been life threatening, so I owe him/her.
Hail Satan!