Malapropism: noun - taken from the surname of Mrs. Malaprop, a character in R. B. Sheridan's comedy ‘The Rivals’ (1775) noted for her misuse of words: unintentionally humorous misuse or distortion of a word or phrase; use of a word sounding like the one intended (homophones) but ludicrously wrong in the context.
Used well, the deliberate replacing of words with different ones can really make a humorous scene.
‘If it’s true that Jesus sent them gabardine swine into the sea to drown, it’s not very Christian, is it?’ (Gadarene).
‘Them women was jus’ sayin’ that there fellah’s fallacy ain’t nowhere near as huge as ‘e says it is.’ (phallus)
Picture: Overlooking the Yorkshire Dales.