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

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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