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 09, 2005

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When you and a friend split a 30-rack of any beer, and split a white castle crave case 30-pack.
Don't do it the next morning I threw up pink balls?!?!?!
by cam_fash March 07, 2005

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The holday described as "The St. Paddy's Day of Smoking" Mostly tobacco, dirty thirty happens when the 30th day of the month falls on a saturday or friday.
Dude, What you gonna do for dirty thirty? im gonna smoke my fucking balls off bro!
by Anita Wang March 26, 2007

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A blunt/joint of weed laced with cocaine. There is no limit to the amount of cocaine you can use to create a Dirty Thirty, however it is usually a half of a gram or about Thirty dollars worth.
I need some yay to go along with this green so I can roll up a dirty thirty.
by Scrapiron October 06, 2005

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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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The Urban Dictionary T-Shirt

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A bad type of Marijuana, most likely having seed's inside of the buds.
Mostly "brick weed" or weed that is dense and extremely compacted. Most bud smokers like fluffy weed.
-Luke always has dem Dirty Thirties.

-I grabed a snacth offa Jim the other day, and found out that it was Dirty Thirties, and i payed for dro.
by Moley the mole-ester October 14, 2008

The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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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 08, 2016

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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