Lent my friend a glass jug because she had just gotten a new place and had no dishes of any sort. Apparently it wasn't clean enough for her despite washing it thoroughly before handing it to her. So she washed it in scalding hot water, then put ice cold juice into shattering it.
I had that jug for years, always kept it clean. One day with her and she shatters it because she's a germaphobe....