Top Definition
A fart with fallout. More than a wet fart. Usually unintended. Begins as gas, but finishes with value added.
His attempt to subtly, quietly relieve his gas pressure ended terribly in a loud atomic fart.
by MTSpacey February 16, 2007

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A very smelly fart and causes people to gasp for air and eventually have to open the windows.
I think someone died in here or someone let loose an atomic fart.
by Brandy May 15, 2004

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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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The atomic fart is incredibly loud and smells awful too. It also results in a big explosion causing everyone to fall to the ground, suffering the effects of methane poisoning.
Mischevous S just wipeout out that whole city with that atomic fart.
by Coopie June 17, 2005

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.

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