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 February 18, 2016
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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 8, 2005
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-T.D.T.B. A transitional state of a man’s testicals in which they no longer have the luster of youth they once had in their 20’s

-Noun: wrinkled, testicles that belong to a man 30 years or older. (more commonly referred to as T.D.T.B.)

-Balls that always seem to be sweaty and sticky
Girl 1: "So, how is Gordan in bed?"

Girl 2: " he was turning me on and all, but then I felt his Tight Dirty Thirty Balls (T.D.T.B) and I would have needed to do some blow to get on that!

I don't Have old man balls i still have T.D.T.B
by Mr Mc MoMo December 6, 2011
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An area code belonging to the western Chicago suburbs refered to by residents as "the dirty six-thirty". Towns included in the 630 include: Addison, Aurora, Bartlett, Batavia, Bensenville, Bloomingdale, Bolingbrook, Carol Stream, Clarendon Hills, Darien, Downers Grove, Elmhurst, Geneva, Glen Ellyn, Glendale Heights, Hanover Park, Hinsdale, Itasca, Lemont, Lisle, Lombard, Naperville, Oak Brook, Oswego, Roselle, St. Charles, Streamwood, Villa Park, Warrenville, West Chicago, Westmont, Wheaton, Willowbrook, Winfield, Wood Dale, Woodridge, Yorkville.

It's a virtual Sodom and Gomorrah.
You gonna hook up tonight? Fo' shizzle she's from The Dirty Six-Thirty... A-town (Aurora).
by Indy's brother October 17, 2010
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a.k.a. "The Dirty" and "The Dirty 530"

-area code of a region in Northern California, east of the coast and north of Sacramento up to Oregon border
-includes major cities of Yuba, Redding, Chico, Placerville, Davis, and Butte
A: Hey guys I'm back in The Dirty! (530)
B: Awesome let's hang out and kick it soon!

A: Where you from?
B: The Dirty, bro
A: Dirty Five Thirty?
B: Yupp
A: Right on, represent!
by MrsOfficer August 18, 2011
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northern california. started by me on november first 1997 when norcal witched from 916 to 530. it is a movment to put norcal on the map. it has NOTHING to do with the hyphy movent or the bay area. we ryd mini trucks.
if u live in the 530 u live in the dirty five thirty.
by Dirty530 king July 2, 2007
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Phrase used to describe the North American 830 area code covering Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell, Comal, De Witt, Dimmit, Edwards, Frio, Gillespie, Guadalupe, Karnes, Kendall, Kerr, La Salle, Live Oak, Llano, Maverick, Medina, Real, Uvalde, Val Verde, Wilson, and Zavala counties.
"Hey foo, where you from?"
"Tha dirty eight thirty nagga!"

"Dont mess with that playa, he's from the dirty eight thirty."

by T.Y. - PT May 24, 2008
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