When a woman has neglected her self-respect and personal hygiene to the point of masturbating after eating a bag of Cheetos, or any other cheesesnack for that matter, without cleaning off her fingers. The result is a Cheeto Dust Taco.
Bro, I was going to go down on that girl from the bar, but when I pulled her panties down I found a Cheeto Dust Taco
The vagina of a lonely woman, who hasn't had sex or masturbated in a couple weeks at least. She is a very sad sight to see. The term "dusty taco" refers to the human embodiment of depression and loneliness. The women with a dusty taco are usually under age or about ready to commit suicide. Either way, it is very to approach a girl with a dusty taco.
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.