One day in lab we were using Bunsen Burners to heat a solution. Sister John Mary patiently showed us how to attach the rubber hose to the gas outlet, adjust the burner valve, turn on the gas and then light it with one of those flint starters. I had just got mine started when one of my fellow classmates, not to be named, but I think his initials were JW, decided to light the gas at the gas outlet. He was successful. A blast of fire shot out in an L-shaped plume that scared everyone half to death including Sister John Mary. I could feel the heat coming from the flame. Our teacher quickly turned off the gas. I don’t remember the rest of the experiment.