Top Definition
A holiday I invented one day, celebrated on March 16. It is celebrated by going wild, which gave the holiday its name. It is also celebrated by singing, dancing, and, best of all, filming the whole scene.
I will be very happy when Insanity Day comes around.
by amazing javascript programmer January 08, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white 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

Soft and offensive. Just like you.

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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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