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1.
The scaley, flakey, stuff that dries around pussy lips. Stuff left from either an outside source such as jizm or or an inside source such as cheese. Either white, yellow or green in color. Smells, oh well, once you get past the smell you have it licked.
You could scrape the the pussy crust off with a paint scraper.
by LDINVA July 24, 2006
 
2.
As a insult in order to force them to be grossed out and wander off with pictures in their minds of a not-too-nice nature.
Carla Blaney your such a pussy crust!
by aLLhAiLMeGaN July 20, 2004