There was one from a cuckholding community about this guy that was trying to get his wife to fuck his dad.
Fast forward a bit, wife leaves him for his dad and they constantly send him pics and stuff. I'll edit once I found the thread again.
EDIT:
Found it.
Double Edit: apparently this shitstorm has been going on for a few years. His wife is about to marry his dad [step-dad sorry memory of this is pretty shot].
Beta as fuck this guy...