Top Definition
Usually found on fat people; The furthest south, and usually the biggest roll on your stomach. Can be seen bulging out of high waste pants. The waste of your pants usually gets stuck in between your lumpsack, and other role.
The fat receptionist set her clip board down on her lumpsack.
by Lady Products October 04, 2008

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as in sack of lump. urban translation... one who is lumpy.
lumpsack: Rosie O'Donnel
by esri February 06, 2010

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A word used in many different convorsatins, like in arguments when you dont know what to say. (has no meaning just wierds people out and makes it akward for them.)
guy1: hey dude ur moms a whore

guy2: well.. ur a lump sack

guy1: what?....... im out
by katz98 January 13, 2012

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).

Buy the t-shirt