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1. Infected pussy often used to describe prostitutes.
2. Can be considered as a fag or someone who nags alot.
1. Yo dont hook up with that bitch, she got twat rash.
2. My little brother is such an annoying twat rash.
by KOBE BRYANT WITNESS December 29, 2005
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2
can be used as a noun or as part of a simile
"fook off twatrash i'm busy"

"god that person whos following me round the club is harder to get rid of than a twatrash"
by Midnight Miss Suki September 03, 2004
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