Microwave rule - Lemmy

Spoons won’t spark, you gotta use aluminum foil instead for best results.
METAL in MICROWAVE Oven Is NOT That Dangerous

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Counterpoint: Aluminum foil wrapped spoons.
I could have sworn I once accidentally left a spoon in a casserole I was heating up and it started sparking…
I only ever eat with spoons and I remember it sparking, so they do spark in some microwaves.
Might be a bit pedantic, but I think it's more that some spoons will spark in microwaves. It's the shape of the metal that causes arcs in places the charge can jump between