When a guy cums on a girl's pussy and waits till the cum dries up on her pussy all crusty.
Megan prefers to eat crusty pussy.
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With sexual relations after a women's menstrual bleeding, the penis emerges from the vagina with a flakey, scabby, residue.
Johnny was pleasantly surprised when he was left with a crusty-crab from his brother's girlfriend.
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The face that one makes when feeling completely embarrassed, otherwise known as crusty. This face differs from salty face because when hears salty face, you look at whomever said those horrible words with a look of misunderstanding and beat the crap out of them. When one hears crusty face, they immediately start crying and rocking back and forth in the fetal position because you were humiliated so badly.
Megan: Hey you guys... Did you see that really pretty girl totally shoot down that loser?
Jackie: Yeah.
Abbey: Totally
All three: CRUSTY FACE!
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After someone has fisted another person, they leave their hand uncleaned for a while. The fluids, dry and harden on the hand, forming a Crusty Knuckle, or Crusty Knuckles depending on the severity.
Jasmin fisted Leeroy. She left her hand overnight an the shit hardened. In the morning her hand had turned into a Crusty Knuckle.
The rim around a womans vigina that has scabes all over and is constantly wet.
When she pulled down her pantis there was a crusty toilet!
When you fuck a person's asshole so hard that their asshole rips apart and starts to bleed.
I feel bad for giving Jane a crusty sunshine.
A sexual act whereupon a man is fucked up the ass and then shits the cum and feces mixture onto the chest of his partner. The partner is then laid out in the sun with the mixture spread thin across his chest. As the sun dries the mixture, it becomes crusty. Then you punch him in the dick.
I gave your father a crusty Uncle last night.