On Fridays you wear a shirt which you bought at a thrift store like Value Village and wear it every Friday without washing it until it is unwearable in which case you buy another.
Justin: That shirt looks terrible it must be Dirt Shirt Friday.
A dirt skirt: Is a cute girl you meet while she is young but who grows up white trash. You know she will always be trash and your sad cuz you would totally want to have sex with her later on in life.
Sheila was cute from day one but she'll always be a dirt skirt.
She is a total dirkskirt but I would still bang her.
when your nailin someone in the ass and they never took a shit before you did, so when your done and pull out you have a shit ring stained around your dick, or a dirt skirt.
she told me not to put it in her ass, but i did anyway, now i'm wearing a dirt skirt for life.
1. Synonymous with "whatever lifts your luggage".
2. You can use "whatever blows the dirt up your skirt" when directing this towards homosexuals or a friend who says something extremely gay.
Brian: hey damian
Damian: I'm thinknig about have gay sex today.. what do you think?
Brian: What ever blows the dirt up your skirt!