Yay, fireworks! Those new-fangled fast fuses and Earth Leakage Circuit Breakers have taken away much of the fun.

BTW: If you wire all the pins of a plug together on the inside with thick copper wire, and put a sturdy rubber insulating handle on the thing, you have a device that can be used to bring down all activity in a school by simply sticking it into a socket here and there.

Or so I've heard.