I have an unrelated food explosion story, incidentally.
A while ago, I was microwaving a tin of soup (Heinz’ Cream of Tomato, fact fans). I’ve done this a thousand times; in for a minute and a half, stir, in for another minute and a half, eat. Adjust up or down according to oven power.
I was returning to the kitchen during the second phase when there was an almighty ‘kin *BANG* like you’ve never heard. I tore the oven door open to find a mostly empty soup bowl and an entirely internally orange microwave.
A bit of subsequently hungry legwork on the Internet lead me to think that it ‘superheated,’ whatever that meant. Just glad that the oven caught it rather than (a child’s or) my face. Be careful out there.