Top Definition
A condition where a person has to fart so bad they become erect; A condition where a person has such a satisfactory fart they become erect.
"Dude, I just shit my pants. I think I have a fart boner."

"Oh man, I'm going to shit my pants. I'm getting a fart boner."

by Jake Adams October 22, 2007

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The act of farting while you have a boner.
Aww man! I have a fartboner

Eww it stinks!
by AlphaCookie January 03, 2011

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