The Dirty Thirty (Dirty-30) is a southern colloquialism for .30-30 Winchester (.30 WCF), a popular rifle cartridge mainly used for hunting.
"Yeah brother this Dirty Thirty has taken more deer than any round ever made"
"I'm gonna have to start shitting gold if I'm gonna keep hunting with this Dirty Thirty."
"I'm gonna have to start shitting gold if I'm gonna keep hunting with this Dirty Thirty."
by ActuallyRealDonaldTrump December 10, 2022

Slang term: A person's 30th year of life. Typically a 30th Birthday term representing one surpassing their 20s to enter the "dirty" part of life. Adulthood. Dirty 30 celebrations tend to be a night full of drunken debauchery. Full of bad decisions, vomit, and unnecessary semen in random places.
"Marrisa is turning 30 this year."
"Ooooh shit. Goodbye 20s. Time for a Dirty Thirty party!!! No black lights. I still have cum stains on my jeans from Stephanie's dirty 30 party last year. "
"Ooooh shit. Goodbye 20s. Time for a Dirty Thirty party!!! No black lights. I still have cum stains on my jeans from Stephanie's dirty 30 party last year. "
by Eww_bitch_nooooo October 13, 2021

by Cracker Jack Jones December 29, 2010

When a person reaches the age of thirty and uses promiscuity to try and convince people that he and or she was not a prude.
by Hardcore art September 1, 2019
