Put a shock in it. The marvellous game Lightning Reaction, as profiled here on this marvellous website, is a simply evil way of electrocuting one's friends for fun without recourse to an electric cattle prod. All of which is a jolly good jape after a few Appletisers.

But, being designed for domestic party use and group entertainment, it didn't have the truly portable credentials desired by mobile pranksters. Now, with the Shock Pocket and its handy go-anywhere convenience, you can take it anywhere an instant shock is required. Pub. Bus. Office. Loo...

Let's refresh our memories a little. On activation, all players take a spot around the device and take hold. The tension builds as the charge readies itself. Then, on command, all players hit their respective controls. Last to hit receives a juddering jolt of pure electrical power. Sheer joy abounds.

This Shock Pocket can also be configured to perform a roulette challenge, when all participants hold on, quivering in the expectation of a shock at random. The loser, of course, must buy the next round. For that's life.