the correct way to order a fish sandwich in any fish and chip shop. A fish sandwich is a buttered breadcake with a heavily battered fish (normally cod or haddock (or even the sick combination: CODDOCK)) inside, oozing grease.
Harry: "One fishwich please Squire!"
George: "Yes, very good sir."
Harry: "Cod if you would please, i can't stand that bastardin' bastard Haddock."