I was at a music party when a woman picked up her Martin by its strap from its case. The strap came off the button, the guitar fell and suffered a nasty gash on its top. She eventually had it repaired, I think, but it was a sad night.

Another time - I wasn't there that time - a fiddler had propped his bow against a chair and this same woman stepped onto the middle of it. It broke in two. He had it repaired but said it has never sounded the same since.