"Rodomontade" is a noun, meaning a story of such extreme boastfulness that it is highly unlikely to be true. It comes from Rodomonte, king of the Moors, from the Orlando Furioso, who at one point singlehandedly swims a river, knocks down huge wooden church doors with his bare hands, and singlehandedly slaughters hundreds of Christian knights in a terrible rage before making his escape.
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