Why did my bowl break in the microwave?


It’s made of a very durable plastic-y kind of material, and I’ve had it for about 3 years, during which time I’ve put it in the microwave successfully thousands of times. And I don’t recall the box the bowls came in saying that you couldn’t put them in the microwave. But today, when i was heating up some spaghetti-o’s in the bowl, i heard a loud pop, and the bowl had cracked all down the side and bottom.

Why, after 3 years and many successful microwave heatings, did the bowl crack???

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