By this time, the bubbles of methane gas should be rising out of the plastic jar. Scoop up a small handful of bubbles with your left hand. Step away from your friend. Light the striker with your right hand and touch the bubbles in your left. (If you choose to scoop up bubbles in both hands, then your beach ball friend will have to be the one who lights the fire.) This is probably the scariest step in this entire book of demonstrations! The methane-filled bubbles will produce a large flame (keep your hand in front of you and don’t move!), but it will extinguish on its own in just a few seconds, and your hands will remain unharmed! Scream with excitement and take a well-deserved bow.