Top Definition
an ass that is extremely big, yet it is so sloppy because it has wrinkles or flaps of grease everywhere - Just like a Big Mac.
Guy 1: Yoo I got some ghetto booty last night! She got that big ass son.
Guy 2: Aww hell, that ain't no good ass, that's a big mac ass.
by TheOtherWong February 08, 2010

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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An ass that is so big and amazing that you you just want to take a bite out of it.
Did you see that chick on the treadmill with the big mac ass?

Yea, I just want to go take a bite out of it!
by crackle1102 August 18, 2014

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