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A Synister Weasel is promiscuous female, one who may deceptively act innocent whilst cheating on her man.
"Yo, just brapped out some guy in Gedzville tossing ma' girls salad!"

"man, that gash is a synister weasel, bre!"
by MC Scratch August 09, 2007

Words related to Synister Weasel

cheater ho promiscuous synister weasel