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1. An ugly girl's face, which protects her chastity and her virginity, usually unintentionally

2. A very ugly or scary mask worn by a pretty girl with the intention of driving away potential suitors; usually, these suitors are particularly unattractive or annoying
Alexa: Damn, Melissa's all alone in the corner while we have guys all over us.
Sadie: I know, right? That Chastity Mask of hers is really working tonight.

Hot Girl: This hot guy kept hitting on me, but he had a really irritating voice, so I put on my Chastity Mask - I always keep a spare in my purse - and that fool was outta here.
by FunnyLady19 November 27, 2011
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