Dismantle a disposable camera with a flash.
Charge it up, and attach two leads on both sides of the xenon flash tube. Grab one end with one hand, and touch the other!
WEEEEE!
If you want to take it a step further, get a daisy chain of ur mates, each holding hands (5 is a good number) and get each end to touch the contacts.
An excellent way to get charged before an exam, or, to pass the time.
And dont be [language filter smackdown] about it, and just do it. Ive done it like a 100 times, and im fine.