My son, when he was about 5, had seen me microwaving readybrek, he hadn’t noticed me adding the milk. One morning, before I was up, he tried to make himself some by putting a dry bowl of it in the micro for about 10 mins on the timer. It eventually exploded, blowing the door of the microwave open, shards of the bowl hit the opposite wall of the kitchen (about 5 ft away) and a little pile of smouldering readybrek was left in the middle of the turntable.
I was just glad he hadn’t stood in front of it waiting for it to be ready.