Top Definition
the sphincter muscle that sifts the farts from the poop.
His fart muscle is broke thats why he crapped himself
by TherevJake December 18, 2011

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Lotsa space for your liquids.

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ASS cheeks
My girl friend is on her period so i stuck my penis in her fart muscles
by Mr. Hustlehands December 18, 2016

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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