Top definition
an unexpected traffic jam, often caused by an accident, that makes you anxious and will cause you to be late for an appointment.
Sorry I'm late but I was driving along fine on Route 95 when I got caught in instant carmageddon.
by bingaling65 July 17, 2011
Mug icon

The Urban Dictionary Mug

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

Buy the mug