The most offensive bicycle lock
Bike is one of the most eco-friendly vehicles in the world, but it is also very attractive to thieves. Maybe you can not protect your bike, but we should be more offensive to thieves. This lock is a good idea. When cut, colored liquid inside the entire length of the lock explodes forth unto the thief!
Maybe they will be scared, but there is another possibility, that is they will crush your bike rather than steal it.
Video demonstration after the break
Designer: Michael Lambourn