Top Definition
A system for measuring and rating the intensity of a fart.

1 - Silent but deadly
2 - Audible, but untraceable
3 - Downright rude
4 - Shirts over noses
5 - Causes minor tremors in confined spaces
6 - Good for crowd control, empties a room
7 - Leaves a small stain
8 - Requires a immediate change of underwear
9 - Time to see a doctor
10 - Armageddon. All of the above and self-asphyxiation leading to inadvertent suicide
"Man, that would be a 9.5 on the Pettersen Scale... I'm off home to change my daks!"
by Stefanowicz January 10, 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