“Gun to the head” is not a phrase that comes up often in wills and estates disputes—one would hope—but it was repeated several times in oral arguments at the Georgia Supreme Court Tuesday in an appeal over a family trust.

Here’s another phrase to remember: “In terrorem,” Latin for “so as to produce terror.” It’s a clause that says any beneficiary who contests a will or, in this case a trust, loses any benefits provided. It could become very important to future estate planning, depending on how the justices rule on this.