Following on from the cellphone gun (from Monday) meet the cellphone stun gun. Slightly less lethal, but no less friendly. For the practical joker (instead of the covert operative) you might want to try the electrified lighter instead… You won’t hurt anyone but you may stop your mates blagging your Clipper.
…Which made me think. Apparently, despite the enormous mythology surrounding the Clipper lighter, no one has a web site dedicated to them… What’s going on?