The taser story below jogged my memory....
back to when trying to connect two large camera flashguns to the same camera, to light a birdbox in the garden (the extent of wildlife photography when you're 12). As with all other electronics I just twisted the bare wires together at the camera end, should work fine. Right until I put my eye to the viewfinder and my glasses touched both wires, blew me backwards and gave me a splitting headache for a good 12 hours.
Pre-digital pro flashguns charge to ~ 600 volts and have capacitors in the size of Coke cans - would make one hell of a taser.

Also remember one lad at school nicking a piece of sodium the size of a fag packet from the lab, and chucking it in the local reservoir. The bang echoed off the hills for several seconds. We ran.
(localboy purveyor of pisspoor puns, Fri 10 Aug 2012, 10:59, Reply)