A guy or girl that acts really nice but does mean shit through pure stupidity.
My "Nass-Hole" best friend just cock blocked me while I was making out.
by MoFo94 February 05, 2010
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1. A term used to show the udder stupidty of an action
2. Action must be carried out during a time of debauchery or mild to extreme stupidity
3. Influence of drugs or alcohol required
4. Nass, a common Madison term meaning idiot, dervived from the verbial phrase "pulling a Nass"
5. Nass is also refers to an urban campus legend
John's utter stupidty the nite before, caused me to say "seriously nass".

Did you know Steve got arrested carrying one shoe and a cellphone? Ya, he pulled a Nass
by A Cunning Midget May 07, 2007
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A NASty ASS Hole. That has not been wiped/washed after taking a crap.
Dude 1#- awwh man I went camping and had a Nass Hole till I got home!

Dude 2#- Next time bring wipes.
by JoshNicula June 02, 2010
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Short for numb ass. The sensation of having a numb ass after having sat in your gaming chair for too long.
"Damn, I've been sitting for so long that I've got nAss"
by Ssatisfyy July 26, 2021
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Yo did u c dat peng ting last nite

Yh man she had a nass
by Kat09 November 24, 2019
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