DEAR MISS MANNERS: I suffered a fall at a social gathering. I got hurt pretty badly and ended up with large scrapes and bruises for over a week. I’m lucky I did not break a bone, but I was pretty shaken up. When I later shared this news with close friends, two of them started laughing hysterically. I said that I was ultimately okay, considering how serious the fall was (not that they asked). I know that there are endless videos online of people falling down, and that these cause laughter, but this is something I shared with people close to me. When did it become acceptable to laugh out loud wh…