what you have to do is get a grape(the little squishy things u eat) cut it in half but not all the way leave some skin attaching both sides, then u must put it in the microwave on top of a piece of wood, then start the microwave I AM NOT RESPONSIBLE FOR ANY HARM TO YOUR SELF OTHERS YOUR HOUSE YOUR MICROWAVE OR ANY THING THAT BLOWS UP OR GETS KILLED if you try this please tell me your results or take a video.
I DO NOT RECOMMEND THIS TO ANY ONE BLOW STUFF UP AT YOUR OWN RISK!!
good luck