A reference to the Twilight Zone episode, "It's a Good Life," in which a mutant with godlike mental powers, in the guise of a monstrous 6-year-old boy, sends with a wish anyone and anything that displeases him to a limbo-like void known as The Cornfield. This term is frequently used on Metafilter to describe the banishment, temporary or permanent, of members who disregard the sensibilities of The Community.
Example: "Since I'm probably off to the cornfield anyway, Mano, fuck you. If you don't like it, don't read it."
1. An imperious, haughty and out-of-touch white woman. 2. A beautiful, delicate, fair-skinned princess.
Miss Anne got just what she deserved.