Top Definition
A small smear of excrement surreptitiously smeared on the back of one's girlfiend's neck before a girls' night out, in order to deter any would-be suitors.
The missus was going out on her work Christmas party the other night and that smarmy git from accounts was there, so I gave her a Chastity Patch when she asked me to fasten her necklace.
by 7Kev7 May 03, 2007
5 Words related to Chastity Patch

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