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
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