That hanged/hung conversation reminded me of a film shown in a class on effective management I attended 15 years or so ago-the film was about meetings, and had all British actors, for whatever reason.
John Cleese was dreaming he was a judge, wig and all, presiding over the trial of a real life employee whom he thought called too many meetings in his department. The guy was asked several times by another employee’s lawyer why he held a meeting on each day of the week, he replied every time that it was the regular meeting for that day, and everyone in the courtroom groaned and rolled their eyes. When the guy was asked for the 5th time and started to give the same answer, Cleese banged his gavel several times, leaned forward, pointed and shouted at the witness “If you say that once more, I shall have you hanged”! Everyone in the class just howled-it was one of the funniest things ever.
I don’t think hanged/hung is an American/British distinction. Not that I am aware of, anyway. I always understood “hanged” to be the past tense only for the act of hanging a human being (to death). Pictures are hung on the wall. Traitors are hanged at dawn.