I used to play a lot of Coup in college. In that game, I can bluff about having a card that lets me steal 2 coins from you. Our group quickly learned that if yo

I used to play a lot of Coup in college. In that game, I can bluff about having a card that lets me steal 2 coins from you. Our group quickly learned that if you let someone get away with that bluff once, not only would they steal from you every turn, everyone else would also start stealing from you too, because they assume you wouldn't challenge them.