Italian police discover that the Mafia have invented a .22 caliber handgun that looks like a mobile phone. Admittedly, it only holds 4 rounds and a .22 caliber bullet doesn't exactly have much stopping power, but when you think of the range it's going to be used at, it's enough.
"You're under arrest, mafioso!"
"Let me just call my lawyer..."
*gets out gun-phone*
Ingenious, but ever so slightly evil. Still, it would discourage mobile phone theft if people thought you might be able to shoot them with it. I wonder how long it will be before we start seeing these on the streets of London...