When the guy cums on the girls pussy and waits for the cum to dry up until it's crusty.

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.

When a guy cums on a girl's pussy and waits till the cum dries up on her pussy all crusty.

These two words usually refer to your mum's stinking pussy although they could be used in a sentence to insult a female in poor financial positions, this could also infer that a female is working hard during the night(:

A crusty pussy has many meanings, most commonly it is a term for someone who is petty and jealous of things one cannot posses.

The definition of someone that is petty and jealous of everything they cannot have.

A girl with a pussy that gives off crust when fucked they feel so good