How to cheer up boring wet breaks. First get your hands on two bolts, one nut and a packet of Swan matches. Screw one bolt a turn and a half into the nut then fill the centre of the remaining hole in the nut with the 'explosive' material off the top of a number of matches. Carefully screw the second bolt in, not too fast or you could end up with a burnt hand. This done, you're ready with a primed explosive projectile device. I can't remember anyone getting hurt but it was exciting at the time - and noisy especially when the coat racks got a strike!