2 definition by Dzer

Top Definition
Riding a motorbike in hazardous conditions, endangering the motorcyclist and any innocent bystanders. Nobody is safe.
Some guy murderbiking on the ice nearly killed me!!
by Dzer December 28, 2010

Mug icon
Buy a Murderbiking mug!
The result of applying mascara in unsuitable/hazardous situations such as; in a moving vehicle, in poor visibility, without a mirror. It can cause injury, bad eye makeup or the loss of an eye.
Trying to do my makeup in the car earlier resulted in mascarnage!!
by Dzer December 28, 2010

Mug icon
Buy a Mascarnage mug!