If you hate someone badly (or want to prank them)
Buy the Shock O Gram. The innocent looking cover of the card have a electrically conductive coating, and an electrical circuit that outputs high voltage.
When you open the card, it will sent a bolt of electricity though the card to the holder of the card. Where the holder then can read the message as to why you hate them.-- mofosyne, May 04 2010 R on T http://content.nejm...t/short/338/25/1812The deluxe model could do this. [mouseposture, May 06 2010] What [bigsleep] said. Regardless, won't work. People won't open the card once they notice the wires leading down to the car battery.-- swimswim, May 04 2010 is it possible to induce a static shock in some way - not that I'm endorsing the product in any way at all...-- po, May 04 2010 [marked-for-retention] Mildly cruel yet hilarious prank.
No car battery would be needed. Just a lithium coin cell and some switching electronics.
[+]-- 8th of 7, May 04 2010 Yeah, belay that MFD.
We need an admin to move this to Product:Prank or some such.-- phoenix, May 04 2010 [marked-for-awesome] Cruelty. [+]-- awesomest, May 05 2010 The shockogram should be an envelope with a window. Regular gift cards or even a piece of cash can be placed within and seen through the window The shock still ensues when the envelope is opened. The battery then powers a chip which plays raucous laughter until the envelope is tucked closed again.
But the gift card should be real, because you have to be cruel to be kind.-- bungston, May 05 2010 How is the circuit completed?-- RayfordSteele, May 06 2010 [RayfordSteele] One contact in the card, the other in the envelope. With any luck at all, you get one in each hand, put a current across the left ventricle, and induce fibrillations. The deluxe model is closed-loop: R-on-T or your money back!-- mouseposture, May 06 2010 This is well within the socially acceptable norms of existing pranks; hold the MFD.
Given the existence of other electroshock prank items, pens, and games, there is a market for this, and the production should be not much more difficult than that of audio-playing greeting cards. I'm surprised that it doesn't exist yet!-- jutta, May 06 2010 random, halfbakery