We used to make "acorn guns", powered by Black Cat firecrackers. The acorns could make a pretty good welt on you.
One of my buddies used kitchen matches to light his firecrackers, and stuffed a handful into his front pocket. Bad idea. He made a pretty smoke trail to the nearest water hose. He missed a week of school, and walked gingerly for 2 more weeks.
One time a friend broke the "no headshot" rule with a Daisy pump, and got me dead center in the back of the head. I saw stars, and it nearly knocked me down. Made a very skinny but very high knot on my external occipital protuberance.
