Soap bubbles and HHO gas
 

These guys are demonstrating HHO Gas in soap bubbles showing the power of HHO gas. This makes me want to try it this weekend.

Eeminds me of when I was back in high school and the shop teacher wanted to show off what would happen if he filled up a balloon with oxygen and acetylene and ignited it. He blew off the door and blew out the windows. None of us could hear for a few hours afterwards. This was back in the seventies. Today it would have involved arrests and lawsuits.