Top Definition
When someone has a flat stomach only made up of fat.
Person1: Dude look I have a sexy flat stomach

Person2: Naa dude, that's just flat fat
by Kurt Hendrix January 03, 2010

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When a really obese loses a ton of weight in a short amount of time, making their appearance seem pinched or unnaturally small
Damn dude, John's wife lost 300 lbs in a week! What a flat fat!
by Ding_Dong_Long_Schlong December 12, 2016

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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