1. Usually meaning that a female or shemale hasnt been fucked for a very long period of time for some reason or another and her vagina becomes obsolete.
2. The vagina becomes very dusty and
decrepid because it hasnt been
fucked in so long.
3. A vagina that was fucked so much that it
burnt out like an old tv, and it can no longer be used, so it becomes dirty and decaying.
Damn motherfucker! Your pussy is wack! You got one of those
Dusty Vaginas! That shit needs to be upgraded with some
21st century cock!