More specifically, caused by the unfortunate inability of the above pictured glass of milk to morph into this:
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Actually, I was anticipating this meltdown. It had been brewing since bedtime on Saturday, when I read the girls a bedtime story that I thought they would enjoy: a lovely book called Yafi's Family, which is about an Ethiopian boy adopted by an American family. I thought the twins would enjoy hearing a story about a child like them. Alas, it hit too close to home, I think. Sad and angry feeling were dredged up, and we all got to experience the brunt of them.
I feel so stupid. And sad.