The episode contains numerous jokes about Ireland and references to Irish culture including the Giant's Causeway, Blarney Castle, James Joyce, Bloomsday, leprechauns, Guinness, Riverdance, U2 and the film Once.
Grandfather clause | My Grandfather's Clock | William Digges' grandfather, Sir Dudley Digges | Lines From My Grandfather's Forehead | grandfather clause | Elizabeth Trussell's grandfather, Sir John Donne |