When I was 17 I learned how to drill holes in steel pipe and groove the cut ends to use screw to fit caps in the size of the pipe in machine shop. So I made one like that, capped one end, glued an M-80 to the hole in the side, filled it with gunpowder, capped the other end, and went out to this old abandoned barn a couple blocks from where I lived. We used to hang out there to smoke cigarettes and fuck around. Light firecrackers, shit like that. So I brought it out there, and everyone was impressed. I learned to do this from Jerry Rubin's "Steal This Book". Anyway, I placed it under the front door of the barn, someone lit it, we ran like hell and it blew out the whole side of a 40 foot tall barn which then caught fire. We ran like hell.
Good times.