12 volts won't do it, but a pulsating 100+ volts will. I used to charge up condensers with the distributor tester and leave them on a wooden workbench for my "curious" students to pick up!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!