Shattered

Spontaneous glass breakage really is a thing - look it up.
If I hadn't seen it with my own eyes I would not have believed it - this is the largest surviving piece of a half pint beer glass which literally disintegrated/exploded in Mrs R's hand, the glass contained a half pint of tomato juice so you can imagine the mess.
Margaret very much does not Love the Sound of Breaking Glass took her a while to compose herself and I don't think she will ever use such a style of glass ever again.