Schadenfreude is pleasure derived from the misfortune of others.
Is there a word which means to take pleasure in the misfortune of another when previously that misfortune was inflicted on you by that other person?
I won't describe here (in public) the particular circumstances in which I find myself looking for such a word, instead please enjoy this example from Three Men In A Boat.
Rather an amusing thing happened while dressing that morning. I was very cold when I got back into the boat, and, in my hurry to get my shirt on, I accidentally jerked it into the water. It made me awfully wild, especially as George burst out laughing. I could not see anything to laugh at, and I told George so, and he only laughed the more. I never saw a man laugh so much. I quite lost my temper with him at last, and I pointed out to him what a drivelling maniac of an imbecile idiot he was; but he only roared the louder. And then, just as I was landing the shirt, I noticed that it was not my shirt at all, but George’s, which I had mistaken for mine; whereupon the humour of the thing struck me for the first time, and I began to laugh. And the more I looked from George’s wet shirt to George, roaring with laughter, the more I was amused, and I laughed so much that I had to let the shirt fall back into the water again.