Top Definition
A slash fanfiction involving twins in a romantic and/or sexual relationship. Many fans find this an abomination.
Some Noteworthy Categories of Twincest Fanfiction:
Fred and George from Harry Potter.

Rin and Yukio from Blue Exorcist.
by SilawenGreenleaf June 26, 2011

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

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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