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Noun, South Side Chicago: 1. A $30.00 eighth of cheap weed, invariably containing many seeds and stems; 2. Nick Swisher, player for the Chicago White Sox, who is in possession of both the fire and the passion.
"You pick up some dank tonight?"

"Nah, just a dirty thirty. It's straight, though."

--

"Fuck yeah! Dirty 30 just doubled to left!"
by Red Line Mike May 15, 2008
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Dude, I drank a whole dirty thirty last night -or- Wanna get a dirty thirty?
by sarah515valleyjunctioncrew March 23, 2004
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Someone lays in the pre-anal sex posistion and spreads their cheeks while a very friendly companion pours a double shot of tequila into their gaping void. After thirty minutes of holding the shots inside of their rectum, the companion places their lips around their partner's anus as they fart the shot of diahquila into their welcoming mouth.
My poop shoot hurts from the Dirty Thirty last night!
I've been backed up for a week from the Dirty Thirty!
by martinswiggart January 24, 2008
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A drinking game (originating in Upstate NY/Capital District area).

Usually played, just prior, to heading out to the bars & clubs (A.K.A. "pre-game drinking" or "pre-gaming").

RULES: using an egg timer, or clock... every participant drinks a completely full shot glass of beer every minute, on the minute.

This game is used as an easy way to get a quick "buzz"... yet difficult (for some) due to the constant smaller quantities of alcohol, timing, and aeration of the beer.

SEE: "Power Hour" for a longer version of this game.
Person A: "Let's head out to the bars!"
Person B: "No. Let's watch the end of the game, then head out to the bars."
Person C: "I want a good buzz before we leave..."
Person B: "Let's do a Dirty Thirty, then head out to the bars!"
by meatomatic May 14, 2009
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When a Penis is 30 percent erect.
Ron: That fat bitch has a peeping thong!
Steve: Yeah but it's kinda hot. I got a dirty thirty
by item535 June 24, 2005
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An individual approaching the age of thirty, nonetheless in denunciation of the aging process and notwithstanding, insists on lying about their mounting years simply by acting the part. Sometimes called teenial. The denial of the teen years long gone by.
Big Gay Billy is so ‘dirty thirty’, even shopping at the Gap won’t help his plight. Being thirty is really dirty.
by James March 18, 2004
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Time of day, specifically 12:30pm. Considered to be dirty due to the possibility of people who work 9-5 to use their work breaks for brief snippets of mischief.
James: When are you taking a break?
Bob: Dirty Thirty. Going to go grab a beer and then come back.
by GothamsCapedCrusader September 8, 2016
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