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The act of enacting an extremely excessive, violent and unpleasant form of vigilante justice on someone; a la Rorschach from The Watchmen.
Yeah, I saw that guy trying to steal money from the clerk at the store. I grabbed a bottle, smashed him over the head and used the glass to slash the bastard's face. I Ror-shanked the sucker!
by CalDude JR June 01, 2010