Original Commentary

We're hoping that nobody who designs microwave ovens for a living is reading this, because there's probably a really technical name for the safety features on a modern microwave, and a complicated answer to whether Brisbane or Kimberly is right. Brisbane sure doesn't know what it is. He does, however, want popcorn - Terrence

Modern Commentary
I will point out that microwaves have very high-voltage transformers inside. It is possible to use these to do fractal wood burning. It is not possible to use these to do fractal wood burning safely. If you touch the wrong part, you will die painfully.

Unplugging the thing is a very good first step, though. - Terrence