Top Definition
to rush headlong into a suicidal career spin, then burn every bridge in sight including the one you're standing on, whilst providing some fleeting entertainment to your colleagues.
Wow, Jerry Maguire really should have thought it through before doing a costin.

Fuck me, Buck really felt the sting when Dave did a costin...
by Lou06 July 07, 2006

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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