U-lock

A heavy gauge metal lock used primarily for securing bicycles. The U-lock gets it's name from a 'U' shaped metal rod that has cutouts at each end to fit into a horizontal locking bar. This is considered to be one of the best bicycle locks.

device used for breaking the jaw bones of motorists who think it is humorous to be inconsiderate and endanger the lives of cyclists on the road.

the act of breaking the jaw bone of a motorist, or perhaps smashing out his window.

The practice of inserting a double ended dildo into the ass hole and pussy at the same time, forming a U shape.

Using a 2-5 pound piece of steel, originally intended to lock a bike, to do cosmetic damage to a 2,000-10,000 pound piece of steel originally intended to transport human beings used to purposefully do physical, possibly lethal damage to a human being on a bicycle.

Vigilante justice taken against aggressive motorists or "cagers," by bikers.

The heavy U-lock used to lock the bike is used to do damage to a vehicle, like by taking off a mirror.

U-lock Justice is not legal justice, but it's the only justice some cyclists get for being hit by inconsiderate motorists.

When pansy bicycle messengers vandalize automobiles with their bicycle lock. Usually because they think they are above the laws of the road yet still want to peddle in it so they sometimes have accidents with automobiles.

The preferred method of vandalizing a car by a Bike Nazi or other irresponsible or self-righteous cyclist. Because few police agencies wield power over cyclists and they can quickly disappear, the vandal frequently gets away with his crime.

U-lock Justice is the Bike Nazi term for it. Vandalism is the most common term used by normal people, including drivers, auto passengers, pedestrians, police and insurance agencies.

U-lock Justice is often dished out to drivers that the Bike Nazi feels is deserving, though many times it is applied to drivers who simply do not notice a cyclist because they're not riding safely or legally.