The name locals use for the town of Workington, Cumbria, England.
Originally named Weorcingaton by the Weorcingas, an Anglo-Saxon tribe with a leader named Weorc (Work). After 1,000 years, the Weorc is now officially spelt as Work, but is almost always pronounced as Wuk in West Cumbrian dialect.
Said after a very corny, very unfunny joke. Derived from the old Vaudeville comedy acts in which almost every one-liner was punctuated by a musical jingle. Usually played on the piano by a portly man with bright red cherub-like cheeks.