When I was 14, I mixed up a bunch of gunpowder from a recipe I found in Popular Science magazine, and tried lighting a little bit of it to see what happened. Unfortunately, I did this too close to the can with all the rest of it I'd mixed up, and a spark jumped from the bit I was lighting to the can, and the whole thing went up in a big ball of flame and smoke and singed my eyebrows off. They've grown back since, but—as I'm sure you'll agree—still, right?