When you stick your penis up a girls nose and jizz in it. Then you make her blow it out with a tissue and the cum comes out.
by princenaseeem69 February 1, 2009

by BigMacMan June 7, 2005

Ex.#1:person #1: "Amy Whinehouse's teeth and hair are butt nasty."
person #2: "I know!"
Ex.#2:girl #1: OMG, last night during the slumber party, my BFFs,like, dared me to,like,wear mascara on my lips and wear leg warmers in public!
sister: OMG, ewwww, that is soooooo butt nasty!
Ex.#3: tween boy #1: did you see the picture on page 52 in our health book? you know, the detailed pic about...
tween boy #2: yeah, that was butt nasty...
ex. #4: ghetto guy #1: man, i was at this one pool party yesterday, and when i went into the pool i saw my girlfriend with a booger danglin' from her nostril!
ghetto guy #2: Man, dat is butt nasty!
person #2: "I know!"
Ex.#2:girl #1: OMG, last night during the slumber party, my BFFs,like, dared me to,like,wear mascara on my lips and wear leg warmers in public!
sister: OMG, ewwww, that is soooooo butt nasty!
Ex.#3: tween boy #1: did you see the picture on page 52 in our health book? you know, the detailed pic about...
tween boy #2: yeah, that was butt nasty...
ex. #4: ghetto guy #1: man, i was at this one pool party yesterday, and when i went into the pool i saw my girlfriend with a booger danglin' from her nostril!
ghetto guy #2: Man, dat is butt nasty!
by codenamejester May 16, 2009

Horribly skanky girls that regularly occupy the local bars trying to hit on bartenders in the attempt to integrate their alcoholic or otherly abused life with someone who is trying to earn money to get through college by holding a part-time job because they want their futures to be stable enough to avoid people like this.
Last night the bar I work at had all the regular bar nasties crawling around, luckily we have new naive staff that serve them because I don't go within a stones throw of their infestive reach.
by Kent-Wes Jacobsen May 11, 2007

A disgusting vagina.
Bro 1: Man, I hate it when a girl has a Nasty Vag.
Bro 2: Yeah dude, its so gross going down on a Nasty Vag.
Bro 2: Yeah dude, its so gross going down on a Nasty Vag.
by Artimus Fleugan February 20, 2012

by thebaddestmanontheplanet131 January 25, 2009

the act of shaking a bottle of Martini Prosecco, putting the nozzle up a girls foofe and removing, causing it to fizz out of her downstairs
lewis hamilton loves to give a girl a nasty martini after winning the grand prix
"dude she totally let me give her a nasty martini seeing as it was new years"
"dude she totally let me give her a nasty martini seeing as it was new years"
by neonteddy July 3, 2012
