In the state of Montana (perhaps elsewhere, I'm not sure) dirty 30 refers to a 30 pack of Keystone Light. Cheap shitty beer that all the hicks LOOVVEEE.
"Dude, dirty 30 only 13 bucks at Orange Street Market!"
by Ca-ca-ca-carmen September 01, 2005
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Rasheed Wallace, number 30, forward for the Portland Trail Blazers NBA basketball team. In the world of sportswriting, Sheed is frequently criticized for his large salary, marijuana citation, large collection of technical fouls, suspensions, altercations and a racially charged Oregonian interview where he said the NBA exploits African-Americans.
by Mike Chicago February 08, 2004
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The 30-aves in East Oakland, California. Hella dangerous for non-residents.
Where that hoe Bubbles stay at?
She stay in the dirty 30s.
Shit, I ain't tryin' to hit that bad.
by pbarr October 27, 2011
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The result of a dramatic increase in alcohol consumption combined with cafeteria style eating you encounter in First year of University. The Freshman 15 taken to a whole new level.
Trevor- have you seen Maddie lately?
Jordan- the weight gain?
Trevor- she's hit the dirty 30
Jordan- classic

Calum- getting a little husky there bud
John- I know, it's the dirty 30
by DonkeyKong_ April 30, 2010
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A fun-filled birthday party to celebrate someone's 30th year. It's usually filled with booze and shinanigans with your closest friends.
Friend: I can't believe this is your last year in your 20's! You're getting old.
Me: Yeah, we should celebrate by having a Dirty 30 party. I need to get shit faced to deal with that!
by Jesse_ca December 20, 2020
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A young caucasian female who appears to be at the upper crust of society but instead is from a really ghetto area such as Springfield, Ma. which is full of stabbings murders and hoodrats.
O damn that white girl can booty pop, she looks so innocent too, she's definatly a dirty 30
by Senor Miguel Angel de Jesus December 13, 2011
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In 2020 a dirty 30 refers to a percocet 30 mg pill. Other definitions are outdated
Hml boss i got the dirty 30s
by N54turbo April 15, 2020
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