MobiusArcher: Cursed items can't be unequipped. That might be mostly a rouge-like thing, but I played a lot of games where curses work that way.
For this, Baldur's Gate / Infinity Engine games / D&D titles come to mind. And they also use the Curse spell, essentially the opposite of Bless for combat pluses and minuses..
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Real life curse? Lately I've been a deer magnet. After hitting one about nine days ago I've had four more close encounters, two of them in the same spot as the earlier collision. Probabilities catching up with me, maybe.