An upper white trash version of Paris Hilton. A white trash female or transvestite who aspires to be like Ms. Hilton and who consciously adopts fashions, speech and mannerisms made famous by the spoiled scioness of the Hotel magnate.
A conjunction of the two terms Parish and Chilton, each with mainstream references, e.g., "Parish" is the Louisiana equivalent to "County" and "Chilton" is a reference to the Auto Parts Reference Manual. The urbandictionary.com definitions of these terms are considerably seedier and decidedly connote that which is thoroughgoingly low class.
Bob: After Suzy won the lotto last year she went Parish Chilton big time and like crazy fast, fried and dyed her hair, got Botox, Lipo and boob implants and then moved with her passle of chirrens into that abandoned mansion of a spec house there in Collyel - you know, the one with the large swimming pool shaped like the Jim Beam bottle. Oh and she finally lawyered up and divorced that good for nothing moron Tommy who's been sponging off of her all these years. Next thing you know, she bought herself a Chihuahua, a Hummer H3 and is now with misteree beef on a two week cruise to Cancun.
Marcus: "One word, Bobby. . . go girl!"