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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 May 13, 2005
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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 29, 2005
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A new word in 2008 for being rich and or outgoing/popular without any effort
Jheeeze dat guys gone dirty thirty!

Im not a hater, buh shes a dirty thirty bitch

lool dirty thirty bwoii
by Anonymizzle14 October 15, 2008
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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 April 1, 2007
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did you hear about hear? her body count finally reached 30. she’s hit the dirty thirty
by randompig December 26, 2017
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Having a quicky on your lunch break
On my lunch break I’m gonna go to Subway and hopefully get a dirty thirty with Janice.
by Your New Stepdad August 2, 2019
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