If we're sharing stories from CK2: there was that one time where I was playing as the de Hautevilles in southern Italy and I got to be a part of the Crusades, all nice and stuff, getting money, having Bohemond II be King of Sicily.
Until I got a Jihad on me.
And then everyone joined against me, except the Turks. I had to get all my allies and beat them off, over and over, and over again. And then the Turks joined, bringing their army of tens of thousands into Sicily, I only managed to white peace because I had enough warscore from the other battles, but I did so just a few days before they marched on my capital and my army.