Top Definition
someone who does nothing. Sits around all day with their thumb up there ass to the knuckle.
Paul: Hey Todd, did you get that work done that you were supposed to do?

Todd: Aww, meant to, but didn't get around to it yet, sorry dude.

Paul: Yur a fuckin shit knuckle Todd, get to work!
by hecklndecalr March 19, 2010

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A bump protruding from a log of shit resembling a knuckle. Shit knuckle.
That dude is a real shit knuckle.
by Andrew X January 26, 2005

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.

Create a mug

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

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

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

Buy the t-shirt