Top Definition
When a definition on Urbandictionary.com has little or no thumbs up, and the author resorts to giving his own definitions thumbs ups.
Eric: Where's Tom?

Jon: Self Thumbing his definitions on Urban Dictionary...
by The Mysterious Mister M May 21, 2010

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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