Top Definition
It is from when you eat spicy foods and later on you feel the burn on the butt.. It feels like acid.. hense the term acid ass.
Dude i ate some mexican food yesterday and i have some serous acid ass today
by THEBIGO August 07, 2006

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someone who has farted and it burns your nose hairs
damn roberto is suffering from a case of acid ass
by FRANK September 30, 2004

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.

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