[petercooper]

Yeah, I think it's just a pragmatic layman's term for a good headline. I've complained over the years to my wife I'd like a "reverse microwave" for exactly this use, so it certainly clicked with me.

[fragsworth]

But anyone who usually understands "microwave" as electromagnetic energy will find this title extremely confusing.

[aneisf]

I think most people on HN are familiar with both microwaves and microwave ovens. It's not really hard to see which one the author was going for.