User blog comment:TenCents/Off-Topic Blog 3 (sort of)!!!:)/@comment-1251488-20110321192831/@comment-1251488-20110322165521

it was a british show called "clangers". In Clangers, the little mouse-like creatures, called "clangers", only spoke in whistles, but actual scripts were written and whistled to. because it was hard to understand what the clangers were saying, the writers could get away with cursing.