Smart fart: A person who knows they are about to let rip a very noisy fart will cough loudly so as to disguise the sound of the fart, quite often in rhythmical time to the blasts and, if very clever, will be in key too.
"We had no idea my uncle had farted as all we heard was his coughing, unfortunately his wry smile and the smell gave it away...so he admitted to his smart fart"
by robsielea September 15, 2008

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
Top Definition
A particularly pungent fart whose stench follows its creator wherever he or she goes for a certain period of time. The term is considered a "play on words" originating from Smart Missle.
"Oh my god, dude, it followed you! It's a smart fart!"
by It_Was_Not_Me_I_Swear February 02, 2008

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