Funny story. I was about 13 and me and two of my buddies went candy collecting. So anyway, I was in a chem-bio suit with a poncho thrown over me and a gas mask on. Nothing great, I know. Here's the important part: we thought it'd be cool to scare people, so we decided to strap a smoke grenade under my poncho. It wasn't a military smoke, but it definitely wasn't a little "magic smoke ball" either. I think it was something like a "commando smoke". Anyways, we light it and the thing malfunctions. Instead of just a nice steady stream of white smoke, the thing had a 3 ft. jet flame coming out of it with smoke. It was strapped to my leg with duck tape and a towel as a buffer. The flame melted my bag, turned most of my candy to carbon, and my friends just stood there laughing as I tried putting it out. Can't imagine anyone who was watching us. There was too much laughter from my buddies and too many frantic motions by myself trying to put it out to have been remotely scary. I didn't get hurt, but the moral of the story - ummm, be safe.