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Iranian Satanism is a term coined by Jason Thistlethwaite and Ty Steiman to describe self-sabotaging behavior that is conducted in a zealous or almost fanatical manner.
It has to do with a niche of people in the Middle East who seek supernatural powers from demons, and they believe that attracting the demons requires debasing themselves. They do things like roll around in piles of feces or starve themselves, accrue major debt, or other things that are obviously not good ideas... because they believe doing that will cause demons to give them special powers or rewards.
In our context at work, Iranian Satanism is a euphemism for when people are doing something that makes their life or job more difficult for no apparent reason, especially when they almost religiously continue doing it after it's been pointed out.