"I'm going to get medieval on your ass." phrase (movie quote) used as a threat of violence or torture. See medieval. [GJ1]
Addendum: From Quentin Tarantino's 1994 masterpiece Pulp Fiction. Spoken by Marsellus Wallace (Ving Rhames), when threatening to torture-to-death his rapist, Zed (Peter Greene). Gamers who make good on this promise can follow it up by quoting Butch Coolidge (Bruce Willis), "Zed's dead, baby." At any rate, the appeal of this particular movie quote to fantasy RPG players is obvious. [GJ1]
Addendum #2: Also spoken, at various times, by Beavis. Gamers will sometimes quote this phrase in a Beavis voice. Are you oppressing me? [GJ1]